Cited by 497Nutritional Studies and DietDiabetes, Cardiovascular Risks, and LipoproteinsDiet, Metabolism, and Disease

Dietary Strategies for Improving Post-Prandial Glucose, Lipids, Inflammation, and Cardiovascular Health

Open access
O’Keefe, James H., Gheewala, Neil M., O’Keefe, Joan O.·2008·Journal of the American College of Cardiology

Abstract

The highly processed, calorie-dense, nutrient-depleted diet favored in the current American culture frequently leads to exaggerated supraphysiological post-prandial spikes in blood glucose and lipids. This state, called post-prandial dysmetabolism, induces immediate oxidant stress, which increases in direct proportion to the increases in glucose and triglycerides after a meal. The transient increase in free radicals acutely triggers atherogenic changes including inflammation, endothelial dysfunction, hypercoagulability, and sympathetic hyperactivity. Post-prandial dysmetabolism is an independent predictor of future cardiovascular events even in nondiabetic individuals. Improvements in diet exert profound and immediate favorable changes in the post-prandial dysmetabolism. Specifically, a diet high in minimally processed, high-fiber, plant-based foods such as vegetables and fruits, whole grains, legumes, and nuts will markedly blunt the post-meal increase in glucose, triglycerides, and inflammation. Additionally, lean protein, vinegar, fish oil, tea, cinnamon, calorie restriction, weight loss, exercise, and low-dose to moderate-dose alcohol each positively impact post-prandial dysmetabolism. Experimental and epidemiological studies indicate that eating patterns, such as the traditional Mediterranean or Okinawan diets, that incorporate these types of foods and beverages reduce inflammation and cardiovascular risk. This anti-inflammatory diet should be considered for the primary and secondary prevention of coronary artery disease and diabetes.

Integrity signals

Registry

Crossref · 10.1016/j.jacc.2007.10.016

Cites

45 of 45 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

45 of 104 cited sources checked · 6 supported · 0 flagged · accuracy not yet measured

  • Premisereasoning

    A transient post-meal rise in free radicals acutely triggers atherogenic changes, including inflammation, endothelial dysfunction, hypercoagulability, and sympathetic hyperactivity.

    “The transient increase in free radicals acutely triggers atherogenic changes including inflammation, endothelial dysfunction, hypercoagulability, and sympathetic hyperactivity.”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [4] Bonora, 2006, Prevalence and correlates of post-prandial hyperglycaemia in a large sample of patients with type 2 diabetes mellitus, Diabetologia source

      The Discussion (page unavailable) says acute glucose elevations may harm functions related to atherogenesis. The References list studies of endothelial dysfunction and thrombin formation, including one proposing a possible role for oxidative stress. Our copy does not establish that a transient rise in free radicals triggers these changes, or support the full list of effects, particularly sympathetic hyperactivity. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [5] Weissman, 2006, Power spectral analysis of heart rate variability during the 100-g oral glucose tolerance test in pregnant women, Diabetes Care source
  • Premisecitation

    Postprandial dysmetabolism independently predicts future cardiovascular events even in people without diabetes.

    “Post-prandial dysmetabolism is an independent predictor of future cardiovascular events even in nondiabetic individuals.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [8] Cavalot, 2006, Post-prandial blood glucose is a stronger predictor of cardiovascular events than fasting blood glucose in type 2 diabetes mellitus, J Clin Endocrinol Metab source

      The Discussion (page unavailable) reports that postprandial blood glucose independently predicts cardiovascular events, but the study measured this in patients with type 2 diabetes. The paper discusses cardiovascular risk in the general population, yet does not establish the claimed postprandial prediction in nondiabetic individuals. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
  • Premisecitation

    Postprandial dysmetabolism causes immediate oxidative stress.

    “This state, called postprandial dysmetabolism, induces immediate oxidant stress, which increases in direct proportion to the increases in glucose and triglycerides after a meal.”
    • Also stated in: § Abstract The highly processed, calorie-dense, nutrient-depleted diet favored in the current American culture frequently leads to exaggerated supraphysiological post-prandial spikes in blood glucose and lipids.This state, called postprandial dysmetabolism, induces immediate oxidant stress, which increases in direct proportion to the increases in glucose and triglycerides after a meal.The transient increase in free radicals acutely triggers atherogenic changes including inflammation, endothelial dysfunction, hypercoagulability, and sympathetic hyperactivity.Post-prandial dysmetabolism is an independent predictor of future cardiovascular events even in nondiabetic individuals.Improvements in diet exert profound and immediate favorable changes in the post-prandial dysmetabolism.Specifically, a diet high in minimally processed, high-fiber, plant-based foods such as vegetables and fruits, whole grains, legumes, and nuts will markedly blunt the post-meal increase in glucose, triglycerides, and inflammation.Additionally, lean protein, vinegar, fish oil, tea, cinnamon, calorie restriction, weight loss, exercise, and low-dose to moderate-dose alcohol each positively impact post-prandial dysmetabolism.Experimental and epidemiological studies indicate that eating patterns, such as the traditional Mediterranean or Okinawan diets, that incorporate these types of foods and beverages reduce inflammation and cardiovascular risk.This anti-inflammatory diet should be considered for the primary and secondary prevention of coronary artery disease and diabetes.( Systemic inflammation is increasingly recognized as an important mediator of coronary artery disease (CAD) and other common chronic degenerative diseases such as diabetes and Alzheimer dementia (1).In many individuals a maladaptive diet is a major underlying cause of this chronic inflammation (1,2).High-calorie meals rich in processed, easily digestible, quickly absorbable foods and drinks can lead to exaggerated post-prandial elevations in blood glucose and triglycerides (3).Accumulating data from multiple lines of evidence suggests that this condition, termed post-prandial dysmetabolism, is an important and largely unrecognized fundamental disturbance involved in the genesis of inflammation and atherosclerosis (3). · plain
      “Exaggerated post-prandial spikes in glucose and lipids generate excess free radicals (or reactive oxygen species) that can trigger a biochemical cascade resulting in inflammation, endothelial dysfunction, and sympathetic hyperactivity (4,5).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [4] Bonora, 2006, Prevalence and correlates of post-prandial hyperglycaemia in a large sample of patients with type 2 diabetes mellitus, Diabetologia source

      The Discussion describes post-meal glucose peaks as common in patients with type 2 diabetes and suggests they may contribute to chronic complications. It does not say that postprandial dysmetabolism causes immediate oxidative stress or that stress rises in proportion to post-meal glucose and triglycerides. Searches for oxidative stress, dysmetabolism, and triglycerides found no passage establishing that mechanism. (LLM, conf=0.74)

      Experimental — accuracy not yet measured
    • cites [5] Weissman, 2006, Power spectral analysis of heart rate variability during the 100-g oral glucose tolerance test in pregnant women, Diabetes Care source
  • Premisecitation

    Diets that include large amounts of fresh unprocessed plants, moderate lean protein and beneficial fats, low processed carbohydrates and saturated/trans fats, and abundant antioxidants substantially improve postprandial glucose and lipid levels.

    “Specifically, diets that include large amounts of fresh unprocessed plants, with moderate levels of lean protein and beneficial fats (such as omega-3 and monounsaturated fats) and low levels of processed carbohydrates and saturated and trans fats, and that are rich in antioxidants substantially improve post-prandial glucose and lipid levels (19).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [19] Lichtenstein, 2006, Diet and lifestyle recommendations revision 2006: a scientific statement from the American Heart Association Nutrition Committee, Circulation source

      The Abstract and Food choices and preparation section recommend vegetables, fruits, whole grains, fish, lean meats, and limiting added sugars and saturated and trans fats. But the sections on blood glucose and lipids discuss fasting glucose and general lipid measures, not a substantial improvement in postprandial glucose and lipid levels from the specified diet. The copy also does not establish an antioxidant-rich diet as the cause of that claimed effect. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
  • Premisecitation

    At a glucose level of 140 mg/dl, cardiovascular risk is already increased by 58%.

    “At only 80 mg/dl the CV risk of post-prandial or post-challenge glycemia begins to increase; by 140 mg/dl, the point at which we traditionally only begin to classify patients as glucose intolerant or pre-diabetic, the risk is already increased by 58% (9,10) (Fig. 1).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [9] Sasso, 2004, Glucose metabolism and coronary heart disease in patients with normal glucose tolerance, JAMA source
    • cites [10] Mellen, 2006, Diabetes, the metabolic syndrome, and angiographic progression of coronary artery disease in postmenopausal women, Arterioscler Thromb Vasc Biol source

      The Diabetes and the MS section defines diabetes using a 2-hour postchallenge glucose threshold of 200 mg/dL, while the Results report coronary outcomes by diabetes and metabolic-syndrome category. Neither section reports cardiovascular risk at 140 mg/dL or a 58% increase; searches for those figures found no supporting passage in our copy. (LLM, conf=0.75)

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  • May combine two claims. 34
  • Classified as probably not a substantial claim. 1
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    Premisecitation

    In patients with normal glucose tolerance, a postprandial glucose level below 87 mg/dl was associated with coronary regression, while the remaining patients had coronary progression proportional to the increase in postprandial glucose.

    “Patients with normal glucose tolerance who had a post-prandial glucose level of Ͻ87 mg/dl had coronary regression.The remaining patients had coronary progression in proportion to the increase in post-prandial glucose.Data from Mellen et al. (10).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [10] Mellen, 2006, Diabetes, the metabolic syndrome, and angiographic progression of coronary artery disease in postmenopausal women, Arterioscler Thromb Vasc Biol source

      The Results report angiographic progression by diabetes and metabolic-syndrome status, not by postprandial glucose level. A search for the 87 mg/dL threshold and for regression among patients with normal glucose tolerance found no passage addressing either part of the claim. Page numbers were not available in our copy. (LLM, conf=0.75)

      Experimental — accuracy not yet measured
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    Premisecitation

    Diets rich in high-glycemic-index, low-fiber foods independently increase the risk of both cardiovascular disease and type 2 diabetes.

    “Most studies show that diets rich in highglycemic-index, low-fiber foods independently increase the risk of both CV disease and type 2 diabetes (19,21).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [19] Lichtenstein, 2006, Diet and lifestyle recommendations revision 2006: a scientific statement from the American Heart Association Nutrition Committee, Circulation source

      The “Choose Whole-Grain, High-Fiber Foods” section (page unavailable) associates higher fiber intake with lower CVD risk, supporting the fiber–CVD portion. It does not say that high-glycemic-index, low-fiber diets independently increase risk of both CVD and type 2 diabetes; the “Aim for a Normal Blood Glucose Level” section discusses diabetes prevention through weight loss and physical activity instead. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [21] Beulens, 2007, High dietary glycemic load and glycemic index increase risk of cardiovascular disease among middle-aged women, J Am Coll Cardiol source
  • May combine two claims.

    Premisecitation

    Postprandial hyperlipemia causes oxidative stress and inflammation and independently potentiates the adverse effects of postprandial hyperglycemia.

    “Post-prandial hyperlipemia, manifest as elevated levels of triglycerides, chylomicrons, and remnant lipoproteins, causes oxidative stress and inflammation, and independently potentiates the adverse effects of post-prandial hyperglycemia (13).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [13] Ceriello, 2005, Effect of atorvastatin and irbesartan, alone and in combination, on post-prandial endothelial dysfunction, oxidative stress, and inflammation in type 2 diabetic patients, Circulation source

      The Results and Abstract (page not provided) report that a high-fat meal increased triglycerides and markers of oxidative stress and inflammation, with more pronounced effects when glucose was added. The Biochemical Measurements section (page not provided) lists triglycerides but not chylomicrons or remnant lipoproteins; the paper therefore does not support those specific components of the citing sentence. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
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    Premisecitation

    Chronic consumption of a diet high in processed carbohydrates leads to excess visceral fat, which increases insulin resistance and inflammation and predisposes to diabetes, hypertension, and cardiovascular disease.

    “The chronic consumption of a diet high in processed carbohydrates leads to excess visceral fat, which increases both insulin resistance and inflammation and predisposes to diabetes, hypertension, and CV disease (25).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [25] Arora, 2005, The case for low carbohydrate diets in diabetes management, Nutr Metab source

      The weight-loss section calls highly refined carbohydrates a likely contributor to weight gain and identifies truncal fat as a marker of visceral obesity. The inflammation section says high-carbohydrate diets may worsen insulin resistance and inflammation in diabetic patients, and the paper links these conditions to diabetes, hypertension, and cardiovascular risk. It does not establish the claimed causal chain from chronic processed-carbohydrate consumption through excess visceral fat to all three diseases, and its language is more qualified. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    A single meal high in saturated fat causes immediate increases in triglycerides, oxidative stress, and inflammation, with corresponding post-meal worsening of endothelial dysfunction, vasoconstriction, and systolic blood pressure.

    “Recent studies of healthy individuals indicate that a single meal high in saturated fat will cause immediate increases in triglycerides, oxidative stress, and inflammation, which causes corresponding post-meal worsening of endothelial dysfunction, vasoconstriction, and systolic blood pressure (11,12).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [11] Jakulj, 2007, A high fat meal increases cardiovascular reactivity to psychological stress in healthy young adults, J Nutr source

      The Discussion (page not provided) reports greater systolic blood-pressure and total peripheral resistance responses to psychological stress after a single high-fat meal. The Introduction (page not provided) reports earlier findings linking a high-fat meal to impaired vascular function and elevated triglycerides to endothelial dysfunction. This paper does not establish immediate increases in oxidative stress or inflammation, or that those changes cause the vascular and blood-pressure effects; its blood-pressure finding concerns reactivity to stress, not a general post-meal rise. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [12] Blum, 2006, Effect of a Mediterranean meal on post-prandial carotenoids, paraoxonase activity and C-reactive protein levels, Ann Nutr Metab source
  • May combine two claims.

    Premisecitation

    Minimally processed plant-based foods are natural sources of soluble and insoluble fiber that improve postprandial dysmetabolism, reduce oxidative stress and inflammation, and lower the risks of coronary artery disease and diabetes.

    “Minimally processed plant-based foods are natural sources of soluble and insoluble fiber that improve post-prandial dysmetabolism, reduce oxidant stress and inflammation, and lower the risks of CAD and diabetes (19,22,27).”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites [19] Lichtenstein, 2006, Diet and lifestyle recommendations revision 2006: a scientific statement from the American Heart Association Nutrition Committee, Circulation source

      The sections “Choose Whole-Grain, High-Fiber Foods” and “Consume a Diet Rich in Vegetables and Fruits” (page not provided) describe these foods as fiber sources and associate them with lower cardiovascular risk. They do not say that the fiber improves postprandial dysmetabolism, reduces oxidative stress or inflammation, or lowers diabetes risk. The paper discusses diabetes prevention in connection with weight loss and physical activity instead. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [22] Jenkins, 2007, Long-term effects of a plant-based dietary portfolio of cholesterol-lowering foods on blood pressure, Eur J Clin Nutr source
    • cites [27] Ma, 2006, Association between dietary fiber and serum C-reactive protein, Am J Clin Nutr source
  • May combine two claims.

    Premisecitation

    Restricting refined carbohydrates improves postprandial glucose and triglycerides and can reduce intra-abdominal fat, particularly in insulin-resistant individuals.

    “In contrast, restriction of refined carbohydrates will improve the post-prandial levels of both glucose and triglycerides and can reduce intra-abdominal fat, particularly in individuals with insulin resistance (25).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [25] Arora, 2005, The case for low carbohydrate diets in diabetes management, Nutr Metab source

      The sections on postprandial hyperglycemia and dyslipidemia report that low-carbohydrate diets lower postprandial glucose and triglycerides, respectively, but do not establish a reduction in postprandial triglycerides. The insulin-resistance section reports reduced truncal fat and greater diet effectiveness in an insulin-resistant group; it does not establish a reduction specifically in intra-abdominal fat. The evidence concerns carbohydrate restriction generally, rather than restriction of refined carbohydrates specifically. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    About one-third of American adults and two-thirds of coronary artery disease patients have abnormal glucose homeostasis.

    “Recent studies indicate that about one-third of American adults and two-thirds of CAD patients have abnormal glucose homeostasis (6,7).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [6] Conaway, 2005, Frequency of undiagnosed diabetes mellitus in patients with acute coronary syndrome, Am J Cardiol source

      The results (Figure 1; page unavailable) report abnormal glucose metabolism in 57% of patients presenting with acute coronary syndrome, which supports a high prevalence in that group but not the stated two-thirds of CAD patients generally. The discussion also reports roughly two-thirds in another acute-coronary cohort. Our copy provides no estimate for American adults. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [7] Cowie, 2006, Prevalence of diabetes and impaired fasting glucose in adults in the U.S. population, Diabetes Care source
  • May combine two claims.

    Premisecitation

    Traditional Mediterranean and Okinawan eating patterns that include these foods and beverages reduce inflammation and cardiovascular risk.

    “Experimental and epidemiological studies indicate that eating patterns, such as the traditional Mediterranean or Okinawan diets, that incorporate these types of foods and beverages reduce inflammation and cardiovascular risk.”
    • Also stated in: § Therapies for Post-Prandial Dysmetabolism · plain
      “The traditional Mediterranean and the Okinawan diets, which are rich in minimally processed natural foods that are low in caloric density but high in nutrient density, have been associated with improved CV health and longevity (1,19).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [1] Fitó, 2007, Effect of a traditional Mediterranean diet on lipoprotein oxidation, Arch Internal Med source
    • cites [19] Lichtenstein, 2006, Diet and lifestyle recommendations revision 2006: a scientific statement from the American Heart Association Nutrition Committee, Circulation source

      The “Consume an Overall Healthy Diet” section (page unavailable) says observational studies and clinical trials associate healthy dietary patterns with reduced cardiovascular disease risk. It does not establish that traditional Mediterranean and Okinawan diets reduce inflammation or cardiovascular risk; Mediterranean diet appears in a reference, while Okinawan diet and inflammation are not addressed in the passages found. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
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    Premisecitation

    Cinnamon, a calorie-free herb rich in antioxidants, significantly reduces the postprandial glucose excursion when added to a high-glycemic-index meal, partly by slowing gastric emptying.

    “Cinnamon is a calorie-free herb rich in antioxidants that, when added to a high-glycemic-index meal, significantly reduces the post-prandial glucose excursion, partly by slowing gastric emptying (24).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [24] Hlebowicz, 2007, Effect of cinnamon on post-prandial blood glucose, gastric emptying, and satiety in healthy subjects, Am J Clin Nutr source

      The Postprandial blood glucose response section reports significantly lower glucose responses after 6 g of cinnamon was added to rice pudding. The Discussion says slower gastric emptying could partly explain the reduction, but presents that mechanism as a possibility, not an established cause. The Introduction mentions an antioxidant effect of a cinnamon-derived compound in vitro; the copy does not describe cinnamon as calorie-free or establish that the rice pudding was a high-glycemic-index meal. Page numbers were not supplied for these passages. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
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    Premisecitation

    Nuts decrease meal-induced oxidative protein damage because they lower postprandial oxidative stress and provide antioxidants.

    “Importantly, nuts also decrease meal-induced oxidative protein damage because they lower post-prandial oxidative stress and additionally provide antioxidants (29).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [29] Jenkins, 2006, Almonds decrease post-prandial glycemia, insulinemia, and oxidative damage in healthy individuals, J Nutr source

      The Results report less postprandial protein damage after an almond meal in 15 healthy subjects, and the Discussion links this to lower glycemic responses. The Discussion says almond antioxidants may also have contributed, but does not establish that mechanism. The claim extends the almond finding to nuts generally and presents the proposed mechanisms as established causes. Page numbers are unavailable in our copy. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
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    Premisecitation

    Dietary protein has a thermogenic effect that increases basal metabolic rate, unlike ingested carbohydrates.

    “Additionally, dietary protein has a thermogenic effect whereby it increases the basal metabolic rate, which is not the case with ingested carbohydrates (25).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [25] Arora, 2005, The case for low carbohydrate diets in diabetes management, Nutr Metab source

      The “Low carbohydrate diets and weight loss” section attributes a possible metabolic advantage to proteins’ greater thermogenic effect, but says the mechanism is unknown and controversial. It does not state that protein increases basal metabolic rate or that ingested carbohydrates lack a thermogenic effect. No page number is available in our copy. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Consuming a light to moderate amount of alcohol, like exercise, increases insulin sensitivity and glucose metabolism for the ensuing 12 to 24 hours.

    “Consuming a light to moderate amount of alcohol, like exercise, will increase insulin sensitivity and glucose metabolism for the ensuing 12 to 24 h (36).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [36] O’Keefe, 2007, Alcohol: the razor-sharp double-edged sword, J Am Coll Cardiol source
  • May combine two claims.

    Premisecitation

    Light to moderate alcohol consumption (0.5 to 1 drink daily for women and 1 to 2 drinks daily for men) is associated with cardioprotective benefits, while increasingly excessive consumption results in proportional worsening of outcomes.

    “Light to moderate alcohol consumption (0.5 to 1 drink daily for women, and 1 to 2 drinks daily for men) is associated with cardioprotective benefits, whereas increasingly excessive consumption results in proportional worsening of outcomes.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [36] O’Keefe, 2007, Alcohol: the razor-sharp double-edged sword, J Am Coll Cardiol source
  • May combine two claims.

    Premisecitation

    Fish oil (omega-3 fatty acids) lowers postprandial triglyceride levels by 16% to 40% in a dose-dependent manner, partly by upregulating lipoprotein lipase activity and accelerating chylomicron clearance.

    “Fish oil (omega-3 fatty acids) lowers post-prandial triglyceride levels by 16% to 40% in a dose-dependent fashion, in part by upregulating lipoprotein lipase activity and accelerating the clearance of chylomicrons (30).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [30] Park, 2003, Omega-3 fatty acid supplementation accelerates chylomicron triglyceride clearance, J Lipid Res source

      The Discussion reports that EPA and DHA accelerated fed-state chylomicron triglyceride clearance and increased preheparin lipoprotein lipase activity, consistent with LPL-mediated clearance. The Oral fat absorption test section reports nonsignificant reductions in triglyceride area under the curve of 15% and 17%; it does not establish the claimed 16%–40% range or a dose-dependent effect. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Weight loss of 5% to 10% or more, particularly with decreased abdominal adiposity, lowers postprandial glucose and reduces the risk of new diabetes.

    “Weight loss of 5% to 10% or more, particularly when accompanied by decreased abdominal adiposity, lowers post-prandial glucose and reduces the risk of new diabetes (25).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [25] Arora, 2005, The case for low carbohydrate diets in diabetes management, Nutr Metab source

      The “Low carbohydrate diets and weight loss” section says 5–10% weight loss may improve glycemic control and that lifestyle interventions including modest weight loss prevented diabetes in high-risk people. “Low carbohydrate diet and postprandial hyperglycemia” reports that low-carbohydrate diets may lower postprandial glucose partly through weight loss. The paper reports reductions in truncal fat but does not establish that decreased abdominal adiposity is particularly important to these outcomes. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Alcohol increases high-density lipoprotein in a dose-dependent fashion, but its effects on glucose homeostasis are nonlinear, conferring benefits at lower doses and harm at higher doses.

    “Although alcohol increases high-density lipoprotein in a dose-dependent fashion, the effects on glucose homeostasis are nonlinear, conferring benefits at lower doses and harm at higher doses (36).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [36] O’Keefe, 2007, Alcohol: the razor-sharp double-edged sword, J Am Coll Cardiol source

      In “How Alcohol Confers Cardioprotection” (page not provided), the paper says alcohol raises HDL in a dose-dependent fashion and moderate intake improves insulin sensitivity and glucose metabolism. It describes J-shaped risks for adverse health outcomes, including diabetes, but does not establish that higher doses harm glucose homeostasis specifically. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Physical activity improves inflammation directly by lowering postprandial glucose and indirectly by reducing excess abdominal fat.

    “Physical activity improves inflammation directly by lowering post-prandial glucose, and indirectly by reducing excess abdominal fat (39).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [39] Healy, 2007, Objectively measured light-intensity physical activity is independently associated with 2-h plasma glucose, Diabetes Care source

      The Results report that physical activity was associated with lower 2-h postchallenge plasma glucose, even after adjustment for waist circumference. The paper does not show that activity reduces inflammation or abdominal fat, and its limitations section says the cross-sectional data cannot establish causality. Page numbers are not available in our copy. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Favored protein sources in the modern diet, such as ground beef, sausage, bacon, and cheese, are high in calories and saturated fats and tend to worsen postprandial dysmetabolism.

    “Unfortunately, the favored protein sources in the modern diet, such as ground beef, sausage, bacon, and cheese, are high in both calories and saturated fats and tend to worsen post-prandial dysmetabolism (3,11).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [3] O’Keefe, 2007, The post-prandial hyperglycemia/hyperlipemia hypothesis: a hidden cardiovascular risk factor?, Am J Cardiol source
    • cites [11] Jakulj, 2007, A high fat meal increases cardiovascular reactivity to psychological stress in healthy young adults, J Nutr source

      The Procedure section describes a sausage-containing fast-food meal with 820 kcal and 17 g of saturated fat, supporting the claim for an example of a calorie-dense, saturated-fat-containing food. But the comparison meal had similar calories, and the Study limitations section says triglyceride and lipoprotein levels were not measured. The paper found increased cardiovascular reactivity after the high-fat meal; it does not establish that the listed protein sources worsen postprandial dysmetabolism. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Glucose and free fatty acids flood the Krebs cycle, stimulate excess NADH, exceed oxidative phosphorylation capacity, and drive single-electron transfer to oxygen, creating free radicals such as superoxide anion.

    “Glucose and free fatty acids flood the Krebs cycle, stimulating an excess of the reduced form of nicotinamide adenine dinucleotide production, which outstrips the capacity of oxidative phosphorylation and drives the transfer of single electrons to oxygen, creating free radicals such as superoxide anion (17).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [17] Monnier, 2006, Activation of oxidative stress by acute glucose fluctuations compared with sustained chronic hyperglycemia in patients with type 2 diabetes, JAMA source
  • May combine two claims.

    Premisecitation

    Lower caloric density and glycemic index and higher fiber and water content in ideal carbohydrate foods induce less post-meal glucose excursion, while their antioxidant phytonutrients dampen oxidative stress generated when glucose or fatty acids are burned in the Krebs cycle.

    “Their lower caloric density and glycemic indexes and higher fiber and water content induce less glucose excursion after a meal, whereas their antioxidant phytonu-trients dampen down the oxidant stress that is inherently generated when glucose or fatty acids are burned in the Krebs cycle (2).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [2] Mitrou, 2007, Mediterranean dietary pattern and prediction of all-cause mortality in a US population: results from the NIH-AARP Diet and Health Study, Arch Intern Med source
  • May combine two claims.

    Premisecitation

    Dietary fiber delays gastric emptying, slows digestion, and reduces postprandial excursions of both glucose and triglycerides.

    “Dietary fiber is effective at delaying gastric emptying, slowing digestion, and reducing post-prandial excursions of both glucose and triglycerides (27).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [27] Ma, 2006, Association between dietary fiber and serum C-reactive protein, Am J Clin Nutr source
  • May combine two claims.

    Premisecitation

    Postprandial hypertriglyceridemia is associated with increased risk of cardiovascular events, whereas fasting triglyceride level is not.

    “Two large recently published cohort studies involving over 40,000 individuals found that post-prandial hypertriglyceridemia was associated with increased risk of CV events, whereas fasting triglyceride level was not (15,16).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [15] Bansal, 2007, Fasting compared with nonfasting triglycerides and risk of cardiovascular events in women, JAMA source
    • cites [16] Nordestgaard, 2007, Nonfasting triglycerides and risk of myocardial infarction, ischemic heart disease, and death in men and women, JAMA source
  • May combine two claims.

    Premisecitation

    Postprandial oxidative stress acutely triggers atherogenic changes, including increased LDL oxidation, sympathetic tone, vasoconstriction, and thrombogenicity.

    “This post-prandial oxidant stress acutely triggers atherogenic changes, including increases in low-density lipoprotein oxidation, sympathetic tone, vasoconstriction, and thrombogenicity (5,17).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [5] Weissman, 2006, Power spectral analysis of heart rate variability during the 100-g oral glucose tolerance test in pregnant women, Diabetes Care source
    • cites [17] Monnier, 2006, Activation of oxidative stress by acute glucose fluctuations compared with sustained chronic hyperglycemia in patients with type 2 diabetes, JAMA source
  • May combine two claims.

    Premisecitation

    Replacing refined carbohydrates with monounsaturated fats from nuts and/or olive oil reduces postprandial hyperglycemia and hypertriglyceridemia, increases high-density lipoprotein, and decreases oxidative stress.

    “Replacing refined carbohydrates with monounsaturated fats (using nuts and/or olive oil) will reduce post-prandial hyperglycemia and hypertriglyceridemia, increase highdensity lipoprotein, and decrease oxidative stress (1,2).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [1] Fitó, 2007, Effect of a traditional Mediterranean diet on lipoprotein oxidation, Arch Internal Med source
    • cites [2] Mitrou, 2007, Mediterranean dietary pattern and prediction of all-cause mortality in a US population: results from the NIH-AARP Diet and Health Study, Arch Intern Med source
  • May combine two claims.

    Interpretationnone given

    Sedentary behavior worsens insulin resistance and magnifies postprandial glucose and triglyceride excursions.

    “Sedentary behavior worsens insulin resistance and magnifies the post-prandial excursions of glucose and triglycerides.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Exercise improves insulin sensitivity predominantly in skeletal muscles and acutely lowers glucose and triglyceride levels in a dose-dependent fashion.

    “In contrast, exercise improves insulin sensitivity predominantly in the skeletal muscles, and acutely lowers glucose and triglyceride levels in a dose-dependent fashion.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [3] O’Keefe, 2007, The post-prandial hyperglycemia/hyperlipemia hypothesis: a hidden cardiovascular risk factor?, Am J Cardiol source
    • cites [38] Levine, 2007, Exercise: a walk in the park?, Mayo Clin Proc source
  • May combine two claims.

    Premisecitation

    Lean protein of high biological value reduces post-meal glucose excursion and improves satiety.

    “In contrast, lean protein of high biological value will both reduce post-meal glucose excursion and improve satiety.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [33] Nilsson, 2007, Metabolic effects of amino acid mixtures and whey protein in healthy subjects: studies using glucose-equivalent drinks, Am J Clin Nutr source
  • May combine two claims.

    Premisecitation

    In healthy individuals, adding whey protein to a pure glucose drink lowered the postprandial blood glucose area under the curve by 56% and increased the insulin response by 60%.

    “In a study of healthy individuals, the addition of whey protein to a pure glucose drink lowered the post-prandial blood glucose area under the curve by 56%, and increased the insulin response by 60% (33) (Fig. 6).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [33] Nilsson, 2007, Metabolic effects of amino acid mixtures and whey protein in healthy subjects: studies using glucose-equivalent drinks, Am J Clin Nutr source
  • May combine two claims.

    Interpretationreasoning

    Fasting completely eliminates postprandial increases in glucose and triglycerides and the resulting oxidative stress and inflammation.

    “On the extreme end of the spectrum, fasting completely eliminates post-prandial increases in glucose and triglycerides and the ensuing oxidant stress and inflammation.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Adding vinegar to a standard meal can improve meal-induced oxidative stress by blunting the postprandial glucose excursion and can increase and prolong satiety, helping reduce food cravings and lower caloric intake over the next two to four hours.

    “Thus the addition of vinegar to a standard meal can not only improve the meal-induced oxidant stress by blunting the post-prandial glucose excursion, but also can increase and prolong satiety, which should help to reduce food cravings and lower caloric intake over the subsequent 2 to 4 h.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    The modern calorie-dense, nutrient-poor diet of processed foods, especially when combined with a sedentary lifestyle and abdominal obesity, produces exaggerated postprandial increases in glucose and lipids, leading to inflammation and atherosclerosis.

    “The modern calorie-dense, nutrient-poor diet of processed foods, especially when combined with a sedentary lifestyle and abdominal obesity, produces exaggerated post-prandial increases in glucose and lipids, which leads to inflammation and atherosclerosis.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    One to two tablespoons of vinegar added to a meal containing high-glycemic-index foods lowers postprandial glucose by 25% to 35% and increases post-meal satiety by more than twofold.

    “Recent studies show that 1 to 2 tablespoons of vinegar, when added to a meal containing high-glycemic-index foods such as white bread or white rice, will both: 1) lower post-prandial glucose by 25% to 35% (Fig. 5), and 2) increase post-meal satiety by more than 2-fold (32).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [32] Östman, 2005, Vinegar supplementation lowers glucose and insulin responses and increases satiety after a bread meal in healthy subjects, Eur J Clin Nutr source
  • May combine two claims.

    Premisecitation

    Vinegar significantly reduces post-meal glycemia, probably because acetic acid slows gastric emptying, delays carbohydrate absorption, and improves satiety.

    “Indeed modern studies indicate that vinegar significantly reduces post-meal glycemia, probably because acetic acid slows gastric emptying and thus delays carbohydrate absorption and improves satiety.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [32] Östman, 2005, Vinegar supplementation lowers glucose and insulin responses and increases satiety after a bread meal in healthy subjects, Eur J Clin Nutr source
34 of 34

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Several scientists are researching and developing nutritional strategies to finely regulate postprandial glycemia without inducing adverse events in the gastric tract.

    “Consequently, several scientists are researching and developing nutritional strategies to finely regulate postprandial glycemia, without inducing adverse events in the gastric tract [17].”
  • An important difference between the Mediterranean and ADA diets is likely to be the content of MUFAs, which has been shown to affect lipid profile, insulin sensitivity, and postprandial glucose concentrations.

    “An important difference between the Mediterranean and ADA diets is likely to be the content of MUFAs, which has been shown to have an impact on the lipd profile (54,55), insulin sensitivity (56-58), and postprandial glucose concentrations (59).”
  • Emerging and compelling evidence suggests that foods with higher glycemic responses can adversely affect blood glucose control and triglycerides and perhaps LDL cholesterol levels, inflammation, endothelial function, and fibrinolysis.

    “Emerging and compelling evidence suggests that foods with higher glycemic responses can adversely affect blood glucose control and triglycerides and perhaps LDL cholesterol levels, inflammation, endothelial function, and fibrinolysis.33,129–132”

    From Components of a Cardioprotective Diet: New Insights (2011) · cites this paper as [132]

  • Emerging evidence suggests that the effects of carbohydrate quality may be most relevant in the immediate postprandial period and among individuals more predisposed to insulin resistance.

    “Emerging evidence suggests that the effects of carbohydrate quality may be most relevant in the immediate postprandial period and among individuals more predisposed to insulin resistance.129–132”

    From Components of a Cardioprotective Diet: New Insights (2011) · cites this paper as [132]

  • Complex, low-glycemic, non-processed, and typically fiber-rich carbohydrates (such as fruits, whole grains, vegetables, and legumes) are usually healthy.

    “Complex, low-glycemic, non-processed, and typically fiber-rich carbohydrates (such as fruits, whole grains, vegetables, and legumes) are usually healthy, while fermentable, high-glycemic, processed, and usually fiber-poor carbohydrates (such as refined sugar, white wheat flour, and sugar-sweetened beverages) have the potential to contribute to chronic inflammation [66,67,68].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Almond study citation does not match the reference list

    Minor

    The almond figure credits Josse et al. as reference 28, but the reference list assigns the Josse almond study number 35. This is part of an apparent numbering mismatch in the references.

1 of 1

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Authors
O’Keefe, J. H., Gheewala, N. M., & O’Keefe, J. O.
Affiliations
University of Missouri–Kansas City (US)
Corresponding author
O’Keefe, James H.
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2008-01
Volume
51
Issue
3
Pages
249-255
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2000427727
Cited by
497
References
44
Citations by year
2026: 12 · 2025: 21 · 2024: 14 · 2023: 20 · 2022: 24 · 2021: 23 · 2020: 25 · 2019: 26 · 2018: 32 · 2017: 33 · 2016: 40 · 2015: 32 · 2014: 23 · 2013: 28 · 2012: 30
FWCI
5.73
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
Keywords
postprandial blood glucose, postprandial lipemia, oxidative stress, inflammation, cardiovascular risk, Mediterranean diet, Okinawan diet, high-fiber diet, plant-based diet, whole grains, Fabaceae, nuts, vinegar, fish oil, cinnamon, tea, caloric restriction, weight loss, physical activity, alcohol, coronary artery disease, diabetes prevention, endothelial dysfunction, hypercoagulability
MeSH terms
Ethanol, Blood Glucose, Cardiovascular Diseases, Diet, Dietary Carbohydrates, Humans, Hyperlipidemias, Inflammation, Exercise, Postprandial Period

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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

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