Cited by 462Phytochemicals and Antioxidant ActivitiesPomegranate: compositions and health benefitsNutritional Studies and Diet

Berries: emerging impact on cardiovascular health

Open access
Basu, Arpita, Rhone, Michael, Lyons, Timothy J·2010·Nutrition Reviews

Abstract

Berries are a good source of polyphenols, especially anthocyanins, micronutrients, and fiber. In epidemiological and clinical studies, these constituents have been associated with improved cardiovascular risk profiles. Human intervention studies using chokeberries, cranberries, blueberries, and strawberries (either fresh, or as juice, or freeze-dried), or purified anthocyanin extracts have demonstrated significant improvements in LDL oxidation, lipid peroxidation, total plasma antioxidant capacity, dyslipidemia, and glucose metabolism. Benefits were seen in healthy subjects and in those with existing metabolic risk factors. Underlying mechanisms for these beneficial effects are believed to include upregulation of endothelial nitric oxide synthase, decreased activities of carbohydrate digestive enzymes, decreased oxidative stress, and inhibition of inflammatory gene expression and foam cell formation. Though limited, these data support the recommendation of berries as an essential fruit group in a heart-healthy diet.

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Written from the paper’s full text.

TL;DR

Berries are rich in polyphenols, especially anthocyanins, and epidemiological and clinical evidence links their intake to improved cardiovascular risk factors such as LDL oxidation, lipid peroxidation, dyslipidemia, and glucose metabolism. The review concludes that berries may be recommended as part of a heart-healthy diet, but calls for more rigorous prospective studies with hard cardiovascular endpoints.

Key findings

  • In the Kuopio Ischemic Heart Disease Risk Factor Study, 1,950 men in the highest quartile of berry intake (>408 g/day) had significantly lower risk of CVD-related deaths than men with the lowest intake (<133 g/day) during a mean follow-up of 12.8 years.
  • In the Iowa Women’s Health Study (n = 34,489 postmenopausal women, 16-year follow-up), strawberry intake was associated with significantly reduced CVD mortality; a mean anthocyanin intake of 0.2 mg/day was also associated with significantly reduced CVD mortality.
  • Of 20 intervention trials reviewed, 9 involved postprandial measures and showed that berry consumption significantly decreased postprandial oxidative stress, especially lipid peroxidation; only 2 trials showed significant decreases in systolic blood pressure, and none showed significant effects on inflammatory biomarkers except a decrease in adhesion molecules after cranberry juice in healthy volunteers.
  • Proposed mechanisms include upregulation of endothelial nitric oxide synthase, decreased carbohydrate digestive enzyme activity, decreased oxidative stress, and inhibition of inflammatory gene expression and foam cell formation.

Methods

  • Narrative review of epidemiological observations, human intervention studies, and cellular/animal mechanistic studies on berries and cardiovascular health.
  • The review summarizes 20 human intervention trials using acai, black currants, bilberries, boysenberries, blueberries, chokeberries, cranberries, lingonberries, raspberries, strawberries, and wolfberries, either fresh, as juice, freeze-dried, or as purified anthocyanin extracts; trials ranged from 4 to 12 weeks.
  • Main analysis is a qualitative synthesis of reported outcomes, including plasma/urinary antioxidant capacity, LDL oxidation, lipid peroxidation, plasma glucose, total cholesterol, HDL-cholesterol, blood pressure, and inflammatory biomarkers; no meta-analysis is reported.

Limitations

  • The paper states that epidemiological data are limited and conclusions need strengthening in future case-control or cohort studies investigating long-term health benefits of berries in specific populations.
  • The paper states that further rigorous, prospective studies are needed with large patient populations and outcomes including not only CVD biomarkers but also “hard” cardiovascular and metabolic endpoints, as well as comparative studies of whole berries versus purified anthocyanins and potential synergistic actions with other nutrients or medications.
  • Evident from the text: the review is narrative rather than systematic, most intervention trials were short (4–12 weeks) and biomarker-focused, and only 2 of 20 trials reported significant systolic blood pressure effects, limiting conclusions about clinical cardiovascular outcomes.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1111/j.1753-4887.2010.00273.x

Cites

71 of 71 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 117 cited sources checked · 0 supported · 0 flagged

  • Findingcitation

    A mean anthocyanin intake of 0.2 mg/day was associated with a significantly reduced risk of CVD mortality in postmenopausal women in the Iowa Women's Health Study.

    “The data also reported that a mean anthocyanin intake of 0.2 mg/day was associated with a significantly reduced risk of CVD mortality in these postmenopausal women.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [28] Mink, 2007, Flavonoid intake and cardiovascular disease mortality: a prospective study in postmenopausal women, Am J Clin Nutr source

      Not checked in the free run.

  • Findingcitation

    The Iowa Women's Health Study showed a significant reduction in CVD mortality associated with strawberry intake in postmenopausal women (n = 34,489) during a 16-year follow-up period.

    “Post-menopausal women (n = 34,489) participating in the Iowa Women’s Health Study, showed a significant reduction in CVD mortality associated with strawberry intake during a 16-year follow-up period.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [28] Mink, 2007, Flavonoid intake and cardiovascular disease mortality: a prospective study in postmenopausal women, Am J Clin Nutr source

      Not checked in the free run.

  • Findingcitation

    In the Women's Health Study, blueberry intake was not significantly associated with risks of CVD or CRP.

    “Blueberry intake was also examined in the study and no significant association was reported with risks of CVD or CRP.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [29] Sesso, 2007, Strawberry intake, lipids, C-reactive protein, and the risk of cardiovascular disease in women, J Am Coll Nutr source

      Not checked in the free run.

  • Findingcitation

    In the Women's Health Study, during a follow-up period of approximately 11 years, a decreasing trend for CVD was observed for subjects consuming higher amounts of strawberries (P = 0.06).

    “During a follow-up period of approximately 11 years, a decreasing trend for CVD was observed for subjects consuming higher amounts of strawberries (P = 0.06).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [29] Sesso, 2007, Strawberry intake, lipids, C-reactive protein, and the risk of cardiovascular disease in women, J Am Coll Nutr source

      Not checked in the free run.

  • Findingcitation

    The Kuopio Ischemic Heart Disease Risk Factor Study showed a significantly lower risk of CVD-related deaths among 1,950 men in the highest quartile of berry intake (>408 g/day) versus men with the lowest intake (<133 g/day) during a mean follow-up of 12.8 years.

    “Data reported from the Kuopio Ischemic Heart Disease Risk Factor Study (KIHD) showed a significantly lower risk of CVD-related deaths among 1,950 men in the highest quartile of berry intake (>408 g/day) versus men with the lowest intake (<133 g/day) during a mean follow-up of 12.8 years.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [27] Rissanen, 2003, Low intake of fruits, berries and vegetables is associated with excess mortality in men: the Kuopio Ischaemic Heart Disease Risk Factor (KIHD) Study, J Nutr source

      Not checked in the free run.

  • May combine two claims. 25
  • Classified as probably not a substantial claim. 3
  • May combine two claims.

    Findingcitation

    For both strawberries and blueberries, the significant reduction in relative risk was associated with at least once per week consumption.

    “For both strawberries and blueberries, the significant reduction in relative risk was associated with at least once per week consumption.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [28] Mink, 2007, Flavonoid intake and cardiovascular disease mortality: a prospective study in postmenopausal women, Am J Clin Nutr source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Benefits of berry intervention were seen in healthy subjects and in those with existing metabolic risk factors.

    “Benefits were seen in healthy subjects and in those with existing metabolic risk factors.”
    Quote in the paperSubstantial claim0 of 10 sources checked
    • cites [32] Cao, 1998, Serum antioxidant capacity is increased by consumption of strawberries, spinach, red wine or vitamin C in elderly women, J Nutr source

      Not checked in the free run.

    • cites [33] Paiva, 1998, Postprandial plasma carotenoid responses following consumption of strawberries, red wine, vitamin C or spinach by elderly women, J Nutr source

      Not checked in the free run.

    • cites [34] Marniemi, 2000, Partial resistance of low density lipoprotein to oxidation in vivo after increased intake of berries, Nutr Metab Cardiovasc Dis

      Not checked in the free run.

    • cites [35] Pedersen, 2000, Effects of blueberry and cranberry juice consumption on the plasma antioxidant capacity of healthy female volunteers, Eur J Clin Nutr source

      Not checked in the free run.

    • cites [36] van den Berg, 2001, A vegetable/fruit concentrate with high antioxidant capacity has no effect on biomarkers of antioxidant status in male smokers, J Nutr source

      Not checked in the free run.

    • cites [37] Simeonov, 2002, Effects of Aronia melanocarpa juice as part of the dietary regimen in patients with diabetes mellitus, Folia Med (Plovdiv.)

      Not checked in the free run.

    • cites [38] Kay, 2002, The effect of wild blueberry (Vaccinium angustifolium) consumption on post prandial serum antioxidant status in human subjects, Br J Nutr source

      Not checked in the free run.

    • cites [39] Mazza, 2002, Absorption of anthocyanins from blueberries and serum antioxidant status in human subjects, J Agric Food Chem source

      Not checked in the free run.

    • cites [40] Bub, 2003, Fruit juice consumption modulates antioxidative status, immune status and DNA damage, J Nutr Biochem source

      Not checked in the free run.

    • cites [41] Chambers, 2003, Can cranberry supplementation benefit adults with type 2 diabetes?, Diabetes Care source

      Not checked in the free run.

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

    Findingcitation

    Currently, only 32% of adults and 13% of adolescents meet the goal of at least two servings of fruit per day.

    “Currently, only 32% of adults and 13% of adolescents meet this goal of fruit intake.”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [2] Centers for Disease Control and Prevention, 2007

      Not checked in the free run.

    • cites [3] United States Department of Agriculture, 2004

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    In the Iowa Women's Health Study, for blueberries, an age- and energy-adjusted model showed a significant decrease in coronary heart disease mortality, though the significance did not persist following adjustment for other confounding variables.

    “In the case of blueberries, an age- and energy-adjusted model showed a significant decrease in coronary heart disease mortality, though the significance did not persist following adjustment for other confounding variables.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [28] Mink, 2007, Flavonoid intake and cardiovascular disease mortality: a prospective study in postmenopausal women, Am J Clin Nutr source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Human intervention studies using chokeberries, cranberries, blueberries, and strawberries (fresh, juice, or freeze-dried), or purified anthocyanin extracts have demonstrated significant improvements in LDL oxidation, lipid peroxidation, total plasma antioxidant capacity, dyslipidemia, and glucose metabolism.

    “Human intervention studies using chokeberries, cranberries, blueberries, and strawberries (either fresh, or as juice, or freeze-dried), or purified anthocyanin extracts have demonstrated significant improvements in LDL oxidation, lipid peroxidation, total plasma antioxidant capacity, dyslipidemia, and glucose metabolism.”
    Quote in the paperSubstantial claim0 of 10 sources checked
    • cites [32] Cao, 1998, Serum antioxidant capacity is increased by consumption of strawberries, spinach, red wine or vitamin C in elderly women, J Nutr source

      Not checked in the free run.

    • cites [33] Paiva, 1998, Postprandial plasma carotenoid responses following consumption of strawberries, red wine, vitamin C or spinach by elderly women, J Nutr source

      Not checked in the free run.

    • cites [34] Marniemi, 2000, Partial resistance of low density lipoprotein to oxidation in vivo after increased intake of berries, Nutr Metab Cardiovasc Dis

      Not checked in the free run.

    • cites [35] Pedersen, 2000, Effects of blueberry and cranberry juice consumption on the plasma antioxidant capacity of healthy female volunteers, Eur J Clin Nutr source

      Not checked in the free run.

    • cites [36] van den Berg, 2001, A vegetable/fruit concentrate with high antioxidant capacity has no effect on biomarkers of antioxidant status in male smokers, J Nutr source

      Not checked in the free run.

    • cites [37] Simeonov, 2002, Effects of Aronia melanocarpa juice as part of the dietary regimen in patients with diabetes mellitus, Folia Med (Plovdiv.)

      Not checked in the free run.

    • cites [38] Kay, 2002, The effect of wild blueberry (Vaccinium angustifolium) consumption on post prandial serum antioxidant status in human subjects, Br J Nutr source

      Not checked in the free run.

    • cites [39] Mazza, 2002, Absorption of anthocyanins from blueberries and serum antioxidant status in human subjects, J Agric Food Chem source

      Not checked in the free run.

    • cites [40] Bub, 2003, Fruit juice consumption modulates antioxidative status, immune status and DNA damage, J Nutr Biochem source

      Not checked in the free run.

    • cites [41] Chambers, 2003, Can cranberry supplementation benefit adults with type 2 diabetes?, Diabetes Care source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    The most significant outcomes of clinical studies show an increase in plasma or urinary antioxidant capacity, a decrease in LDL oxidation and lipid peroxidation, a decrease in plasma glucose or total cholesterol, and an increase in HDL-cholesterol following berry intervention.

    “The most significant outcomes of these clinical studies show an increase in plasma or urinary antioxidant capacity, a decrease in LDL oxidation and lipid peroxidation, a decrease in plasma glucose or total cholesterol, and an increase in HDL-cholesterol following berry intervention.”
    Quote in the paperSubstantial claim0 of 10 sources checked
    • cites [32] Cao, 1998, Serum antioxidant capacity is increased by consumption of strawberries, spinach, red wine or vitamin C in elderly women, J Nutr source

      Not checked in the free run.

    • cites [33] Paiva, 1998, Postprandial plasma carotenoid responses following consumption of strawberries, red wine, vitamin C or spinach by elderly women, J Nutr source

      Not checked in the free run.

    • cites [34] Marniemi, 2000, Partial resistance of low density lipoprotein to oxidation in vivo after increased intake of berries, Nutr Metab Cardiovasc Dis

      Not checked in the free run.

    • cites [35] Pedersen, 2000, Effects of blueberry and cranberry juice consumption on the plasma antioxidant capacity of healthy female volunteers, Eur J Clin Nutr source

      Not checked in the free run.

    • cites [36] van den Berg, 2001, A vegetable/fruit concentrate with high antioxidant capacity has no effect on biomarkers of antioxidant status in male smokers, J Nutr source

      Not checked in the free run.

    • cites [37] Simeonov, 2002, Effects of Aronia melanocarpa juice as part of the dietary regimen in patients with diabetes mellitus, Folia Med (Plovdiv.)

      Not checked in the free run.

    • cites [38] Kay, 2002, The effect of wild blueberry (Vaccinium angustifolium) consumption on post prandial serum antioxidant status in human subjects, Br J Nutr source

      Not checked in the free run.

    • cites [39] Mazza, 2002, Absorption of anthocyanins from blueberries and serum antioxidant status in human subjects, J Agric Food Chem source

      Not checked in the free run.

    • cites [40] Bub, 2003, Fruit juice consumption modulates antioxidative status, immune status and DNA damage, J Nutr Biochem source

      Not checked in the free run.

    • cites [41] Chambers, 2003, Can cranberry supplementation benefit adults with type 2 diabetes?, Diabetes Care source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    None of the clinical studies showed any significant effect of berry intervention on biomarkers of inflammation, with the exception of a significant decrease in adhesion molecules following cranberry juice supplementation in healthy volunteers.

    “Interestingly, none of these clinical studies showed any significant effect of berry intervention on biomarkers of inflammation, with the exception of a significant decrease in adhesion molecules following cranberry juice supplementation in healthy volunteers.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [46] Ruel, 2008, Low-calorie cranberry juice supplementation reduces plasma oxidized LDL and cell adhesion molecule concentrations in men, Br J Nutr source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Berries were shown to increase plasma antioxidant capacity and to decrease lipid peroxidation in smokers who are at high risk of developing CVD.

    “Berries were also shown to increase plasma antioxidant capacity36 and to decrease lipid peroxidation42 in smokers who are at high risk of developing CVD.”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [36] van den Berg, 2001, A vegetable/fruit concentrate with high antioxidant capacity has no effect on biomarkers of antioxidant status in male smokers, J Nutr source

      Not checked in the free run.

    • cites [42] McAnulty, 2005, Effect of daily fruit ingestion on angiotensin converting enzyme activity, blood pressure, and oxidative stress in chronic smokers, Free Radic Res source

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    • cites [55] Suriñach, 2009, Differences in cardiovascular mortality in smokers, past-smokers and non-smokers: findings from the FRENA registry, Eur J Intern Med source

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  • May combine two claims.

    Findingcitation

    Of 20 trials conducted using different varieties of fresh and processed berry products, only two showed a significant decrease in systolic blood pressure: one in healthy men following cranberry juice supplementation and the other in subjects with CVD risk factors following mixed berry supplementation.

    “Of 20 trials conducted using different varieties of fresh and processed berry products, only two showed a significant decrease in systolic blood pressure: one was conducted in healthy men following cranberry juice supplementation46 and the other was in subjects with CVD risk factors following mixed berry supplementation.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [46] Ruel, 2008, Low-calorie cranberry juice supplementation reduces plasma oxidized LDL and cell adhesion molecule concentrations in men, Br J Nutr source

      Not checked in the free run.

    • cites [49] Erlund, 2008, Favorable effects of berry consumption on platelet function, blood pressure, and HDL cholesterol, Am J Clin Nutr source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Mulberry anthocyanins inhibit oxidation of LDL and formation of foam cells in an in vitro model of atherosclerosis.

    “Mulberry anthocyanins have also exhibited antioxidative and antiatherogenic affects, by inhibiting oxidation of LDL and formation of foamcells, respectively, in an in vitro model of atherosclerosis.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [62] Liu, 2008, Mulberry anthocyanin extracts inhibit LDL oxidation and macrophage-derived foam cell formation induced by oxidative LDL, J Food Sci source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Of 20 trials reviewed, nine involved measures of post-prandial status, in which berry consumption was shown to significantly decrease postprandial oxidative stress, especially lipid peroxidation.

    “Of 20 trials reviewed, nine involved measures of post-prandial status, in which berry consumption was shown to significantly decrease postprandial oxidative stress, especially lipid peroxidation.”
    Quote in the paperSubstantial claim0 of 9 sources checked
    • cites [32] Cao, 1998, Serum antioxidant capacity is increased by consumption of strawberries, spinach, red wine or vitamin C in elderly women, J Nutr source

      Not checked in the free run.

    • cites [33] Paiva, 1998, Postprandial plasma carotenoid responses following consumption of strawberries, red wine, vitamin C or spinach by elderly women, J Nutr source

      Not checked in the free run.

    • cites [34] Marniemi, 2000, Partial resistance of low density lipoprotein to oxidation in vivo after increased intake of berries, Nutr Metab Cardiovasc Dis

      Not checked in the free run.

    • cites [35] Pedersen, 2000, Effects of blueberry and cranberry juice consumption on the plasma antioxidant capacity of healthy female volunteers, Eur J Clin Nutr source

      Not checked in the free run.

    • cites [37] Simeonov, 2002, Effects of Aronia melanocarpa juice as part of the dietary regimen in patients with diabetes mellitus, Folia Med (Plovdiv.)

      Not checked in the free run.

    • cites [38] Kay, 2002, The effect of wild blueberry (Vaccinium angustifolium) consumption on post prandial serum antioxidant status in human subjects, Br J Nutr source

      Not checked in the free run.

    • cites [39] Mazza, 2002, Absorption of anthocyanins from blueberries and serum antioxidant status in human subjects, J Agric Food Chem source

      Not checked in the free run.

    • cites [42] McAnulty, 2005, Effect of daily fruit ingestion on angiotensin converting enzyme activity, blood pressure, and oxidative stress in chronic smokers, Free Radic Res source

      Not checked in the free run.

    • cites [48] Jensen, 2008, In vitro and in vivo antioxidant and anti-inflammatory capacities of an antioxidant-rich fruit and berry juice blend. Results of a pilot and randomized, double-blinded, placebo-controlled, crossover study, J Agric Food Chem source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    Blackberry anthocyanin extract inhibits inducible iNOS protein expression, thereby decreasing the inflammatory response in macrophages and inhibiting the formation of foam cells.

    “The study also reported that blackberry anthocyanin extract inhibited inducible iNOS protein expression, thereby decreasing the inflammatory response in macrophages and inhibiting the formation of foam cells.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [67] Pergola, 2006, Inhibition of nitric oxide biosynthesis by anthocyanin fraction of blackberry extract, Nitric Oxide source

      Not checked in the free run.

  • May combine two claims.

    Findingcitation

    In the same study, blueberries showed protective effects against insulin resistance and hyperglycemia, reducing risk factors for CVD.

    “This study also showed the protective effects of blueberries against insulin resistance and hyperglycemia, thus reducing the risk factors for CVD.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [64] DeFuria, 2009, Dietary blueberry attenuates whole-body insulin resistance in high fat-fed mice by reducing adipocyte death and its inflammatory sequelae, J Nutr source

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  • May combine two claims.

    Findingcitation

    Cyanidin-3-glucoside upregulates eNOS in bovine artery endothelial cells, and anthocyanin treatment (cyanidin and delphinidin) increases protein levels of eNOS in human umbilical vein endothelial cells.

    “Xu et al. and Lazze et al. have reported the upregulation of eNOS by cyanidin-3-glucoside in bovine artery endothelial cells, and increased protein levels of eNOS by anthocyanin treatment (cyanidin and delphinidin) in human umbilical vein endothelial cells.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [68] Xu, 2004, Upregulation of endothelial nitric oxide synthase by cyanidin-3-glucoside, a typical anthocyanin pigment, Hypertension source

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    • cites [69] Lazzè, 2006, Anthocyanidins decrease endothelin-1 production and increase endothelial nitric oxide synthase in human endothelial cells, Mol Nutr Food Res source

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  • May combine two claims.

    Findingcitation

    Clinical studies in healthy humans, subjects with diabetes mellitus, dyslipidemia, metabolic syndrome, hypertension, or in smokers, show a significant decrease in CVD risk factors, especially glucose, lipids and lipid peroxidation, and systolic blood pressure, following berry intervention.

    “Clinical studies in healthy humans, subjects with diabetes mellitus, dyslipidemia, metabolic syndrome, hypertension, or in smokers, show a significant decrease in CVD risk factors, especially glucose, lipids and lipid peroxidation, and systolic blood pressure, following berry intervention.”
    Quote in the paperSubstantial claim0 of 10 sources checked
    • cites [32] Cao, 1998, Serum antioxidant capacity is increased by consumption of strawberries, spinach, red wine or vitamin C in elderly women, J Nutr source

      Not checked in the free run.

    • cites [33] Paiva, 1998, Postprandial plasma carotenoid responses following consumption of strawberries, red wine, vitamin C or spinach by elderly women, J Nutr source

      Not checked in the free run.

    • cites [34] Marniemi, 2000, Partial resistance of low density lipoprotein to oxidation in vivo after increased intake of berries, Nutr Metab Cardiovasc Dis

      Not checked in the free run.

    • cites [35] Pedersen, 2000, Effects of blueberry and cranberry juice consumption on the plasma antioxidant capacity of healthy female volunteers, Eur J Clin Nutr source

      Not checked in the free run.

    • cites [36] van den Berg, 2001, A vegetable/fruit concentrate with high antioxidant capacity has no effect on biomarkers of antioxidant status in male smokers, J Nutr source

      Not checked in the free run.

    • cites [37] Simeonov, 2002, Effects of Aronia melanocarpa juice as part of the dietary regimen in patients with diabetes mellitus, Folia Med (Plovdiv.)

      Not checked in the free run.

    • cites [38] Kay, 2002, The effect of wild blueberry (Vaccinium angustifolium) consumption on post prandial serum antioxidant status in human subjects, Br J Nutr source

      Not checked in the free run.

    • cites [39] Mazza, 2002, Absorption of anthocyanins from blueberries and serum antioxidant status in human subjects, J Agric Food Chem source

      Not checked in the free run.

    • cites [40] Bub, 2003, Fruit juice consumption modulates antioxidative status, immune status and DNA damage, J Nutr Biochem source

      Not checked in the free run.

    • cites [41] Chambers, 2003, Can cranberry supplementation benefit adults with type 2 diabetes?, Diabetes Care source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Interpretationnone given

    Underlying mechanisms for the beneficial effects of berries are believed to include upregulation of endothelial nitric oxide synthase, decreased activities of carbohydrate digestive enzymes, decreased oxidative stress, and inhibition of inflammatory gene expression and foam cell formation.

    “Underlying mechanisms for these beneficial effects are believed to include upregulation of endothelial nitric oxide synthase, decreased activities of carbohydrate digestive enzymes, decreased oxidative stress, and inhibition of inflammatory gene expression and foam cell formation.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Findings from cellular and animal models of cardiovascular disease are relevant to the mechanisms by which berries affect human cardiovascular health.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Consumption of fruits and vegetables has been correlated with decreased risks of cardiovascular disease.

    “Consumption of fruits and vegetables has been correlated with decreased risks of cardiovascular disease (CVD).”
    Quote in the paperNot a substantial claim0 of 4 sources checked
    • cites [17] Liu, 2000, Fruit and vegetable intake and risk of cardiovascular disease: the Women's Health Study, Am J Clin Nutr source

      Not checked in the free run.

    • cites [18] Joshipura, 2001, The effect of fruit and vegetable intake on risk for coronary heart disease, Ann Intern Med source

      Not checked in the free run.

    • cites [19] Bazzano, 2002, Fruit and vegetable intake and risk of cardiovascular disease in US adults: the first National Health and Nutrition Examination Survey Epidemiologic Follow-up Study, Am J Clin Nutr source

      Not checked in the free run.

    • cites [20] Holt, 2009, Fruit and vegetable consumption and its relation to markers of inflammation and oxidative stress in adolescents, J Am Diet Assoc source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Berries are a good source of polyphenols, especially anthocyanins, micronutrients, and fiber.

    “Berries are a good source of polyphenols, especially anthocyanins, micronutrients, and fiber.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [5] Agricultural Research Services, 2009

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    • cites [6] Agricultural Research Services, 2007

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  • May combine two claims.

    Interpretationreasoning

    Observational data suggest a potential anti-inflammatory role of berry flavonoids, which may contribute to overall reduction of CVD risk.

    “These observational data suggest a potential anti-inflammatory role of berry flavonoids, which may contribute to overall reduction of CVD risk.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Elevated CRP is significantly associated with inflammation and is a high risk factor of CVD.

    “Elevated CRP has been significantly associated with inflammation and is a high risk factor of CVD.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [30] Ridker, 2000, C-reactive protein and other markers of inflammation in the prediction of cardiovascular disease in women, N Engl J Med source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Nitric oxide formed through activation of inducible nitric oxide synthase has proinflammatory effects, leading to increased vascular permeability, induction of inflammatory cytokines, and formation of peroxynitrite.

    “Nitric oxide (NO), when formed through activation of inducible nitric oxide synthase (iNOS), has proinflammatory effects, leading to increased vascular permeability, induction of inflammatory cytokines, and the formation of peroxynitrite, a strong oxidizing agent.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [66] Stampler, 1992, Biochemistry of nitric oxide and its redox-activated forms, Science source

      Not checked in the free run.

  • May combine two claims.

    Interpretationreasoning

    Because elevated plasma glucose, lipids, and lipid oxidation have been associated with coronary artery disease, these data suggest the potential role of edible berries in ameliorating these risk factors.

    “Since elevated plasma glucose, lipids, and lipid oxidation have been associated with coronary artery disease (CAD),52,53 these data suggest the potential role of edible berries in ameliorating these risk factors.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [52] Krentz, 2003, Lipoprotein abnormalities and their consequences for patients with type 2 diabetes, Diabetes Obes Metab source

      Not checked in the free run.

    • cites [53] Gupta, 2009, Correlation of antioxidants with lipid peroxidation and lipid profile in patients suffering from coronary artery disease, Expert Opin Ther Targets source

      Not checked in the free run.

  • May combine two claims.

    Interpretationreasoning

    Both conventional berry products and purified anthocyanin extracts are effective forms of delivery for berry intervention.

    “These studies ranged in duration from 4 to 12 weeks and used conventional berry products or purified anthocyanin extracts, suggesting that both these forms of delivery are effective.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    On the basis of these data, berry anthocyanins may exert cardioprotective effects by reducing oxidative stress and inflammation through effects on iNOS activity, interfering with carbohydrate digestion and reducing glucose absorption, favorably modulating dyslipidemia, and upregulating eNOS expression so as to maintain normal vascular function and blood pressure.

    “Thus, on the basis of these data, berry anthocyanins may exert cardioprotective effects by reducing oxidative stress and inflammation through effects on iNOS activity, interfering with carbohydrate digestion and reducing glucose absorption, favorably modulating dyslipidemia, and upregulating eNOS expression so as to maintain normal vascular function and blood pressure.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Findings from cellular and animal models of cardiovascular disease are relevant to the mechanisms by which berries affect human cardiovascular health.
  • May combine two claims.

    Interpretationreasoning

    Berries are emerging as a dietary source of multiple compounds and nutrients, including anthocyanins, flavonols, vitamins, and fiber, that reduce CVD risk.

    “Berries are emerging as a dietary source of multiple compounds and nutrients, including anthocyanins, flavonols, vitamins, and fiber, that reduce CVD risk.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Improvements in CVD risk factors such as glucose, lipids, and lipid peroxidation following berry intervention translate into reduced cardiovascular disease risk.
  • May combine two claims.

    Interpretationreasoning

    The principal mechanisms of action underlying the potential cardio-protective effects of berries include counteracting free radical generation, attenuating inflammatory gene expression, downregulating foam cell formation, and upregulating eNOS expression; through these effects, progression of atherosclerosis is slowed and normal vascular function and blood pressure are preserved.

    “The principal mechanisms of action underlying the potential cardio-protective effects of berries include counteracting free radical generation, attenuating inflammatory gene expression, downregulating foam cell formation, and upregulating eNOS expression; through these effects, progression of atherosclerosis is slowed and normal vascular function and blood pressure are preserved.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Findings from cellular and animal models of cardiovascular disease are relevant to the mechanisms by which berries affect human cardiovascular health.
    • Rests on an assumption: Improvements in CVD risk factors such as glucose, lipids, and lipid peroxidation following berry intervention translate into reduced cardiovascular disease risk.
26 of 26
  • The paper relies on this without support.

    Findings from cellular and animal models of cardiovascular disease are relevant to the mechanisms by which berries affect human cardiovascular health.

    “These animal and in vitro data show the potential of berries to ameliorate inflammation, glucose, and lipid abnormalities that contribute to CVD.”
  • The paper relies on this without support.

    Improvements in CVD risk factors such as glucose, lipids, and lipid peroxidation following berry intervention translate into reduced cardiovascular disease risk.

    “Clinical studies in healthy humans, subjects with diabetes mellitus, dyslipidemia, metabolic syndrome, hypertension, or in smokers, show a significant decrease in CVD risk factors, especially glucose, lipids and lipid peroxidation, and systolic blood pressure, following berry intervention.”
2 of 2

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?

  • Functional foods attempt to improve health by incorporating bioactive compounds that may alter lipid, vascular, and other metabolic pathways, microbiome composition and function, and digestive and inflammatory systems.

    “Similar to dietary supplements, functional foods attempt to improve health by incorporating bioactive compounds that may alter lipid, vascular, and other metabolic pathways, microbiome composition and function, and digestive and inflammatory systems.114-121”

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.

  • Smoker study is described as both increasing and not affecting antioxidant status

    Minor

    The text cites reference 36 for an increase in plasma antioxidant capacity in smokers, but that reference's title says the intervention had no effect on biomarkers of antioxidant status in male smokers.

1 of 1

Cites

Flagged first, then by citations

2 of the 73 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. United States Department of Agriculture, 2004, Economic Research Service: Agriculture Information Bulletin 792.7
  2. Agricultural Research Services, 2009, National Nutrient Database for Standard Reference Service Release 22
  3. Agricultural Research Services, 2007, Database for the Flavonoid Content of Selected Foods Release 2.1, 2007

Cited by

Sorted by citations

Authors
Basu, A., Rhone, M., & Lyons, T. J.
Affiliations
  • Oklahoma State University (US)
  • University of Oklahoma Health Sciences Center (US)
Venue
Nutrition Reviews
Published
2010-03
Volume
68
Issue
3
Pages
168-177
ISSN
  • 0029-6643 (ISSN-L)
  • 1753-4887
OpenAlex
W2096895152
Cited by
462
References
73
Citations by year
2026: 21 · 2025: 17 · 2024: 24 · 2023: 21 · 2022: 24 · 2021: 36 · 2020: 24 · 2019: 25 · 2018: 34 · 2017: 35 · 2016: 31 · 2015: 40 · 2014: 35 · 2013: 44 · 2012: 25
FWCI
2.74
Type
journal article
Language
en
Open access
Locations
  • Nutrition Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Funders
  • Cranberry Institute
  • National Center for Research Resources (M01 RR-14467, M01RR014467)
Topics
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
  • Health Sciences › Nursing › Nutrition and Dietetics › Pomegranate: compositions and health benefits
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
Keywords
berries, cardiovascular health, anthocyanins, polyphenols, LDL oxidation, lipid peroxidation, antioxidant capacity, dyslipidemia, glucose metabolism, endothelial nitric oxide synthase, oxidative stress, inflammation, foam cell formation, heart-healthy diet, cranberry, blueberry, strawberry, chokeberry
MeSH terms
Anthocyanins, Antioxidants, Cardiovascular Diseases, Flavonoids, Fruit, Humans, Phenols, Vitamins, Lipid Peroxidation, Lipid Metabolism, Polyphenols

About these checks

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.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-10.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-10.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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