Effect of Incorporating Genetic Testing Results into Nutrition Counseling and Care on Health Outcomes: An Evidence Analysis Center Systematic Review—Part II
Abstract
In recent years, literature examining implementation of nutritional genomics into clinical practice has increased, including publication of several randomized controlled trials (RCTs). This systematic review addressed the following question: In children and adults, what is the effect of incorporating results of genetic testing into nutrition counseling and care compared with an alternative intervention or control group, on nutrition-related health outcomes? A literature search of MEDLINE, Embase, PsycINFO, CINAHL, and other databases was conducted for peer-reviewed RCTs published from January 2008 until December 2018. An international workgroup consisting of registered dietitian nutritionists, systematic review methodologists, and evidence analysts screened and reviewed articles, summarized data, conducted meta-analyses, and graded conclusion statements. The second in a two-part series, this article specifically summarizes evidence from RCTs that examined health outcomes (ie, quality of life, disease incidence and prevention of disease progression, or mortality), intermediate health outcomes (ie, anthropometric measures, body composition, or relevant laboratory measures routinely collected in practice), and adverse events as reported by study authors. Analysis of 11 articles from nine RCTs resulted in 16 graded conclusion statements. Among participants with nonalcoholic fatty liver disease, a diet tailored to genotype resulted in a greater reduction of percent body fat compar…
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Overall evidence on the effectiveness of integrating genotyping into nutritional counseling remains limited and of variable quality.
“However, overall evidence on the effectiveness of integrating genotyping into nutritional counseling remains limited and of variable quality [141].”
From The Seven Methods for the Evaluation of Nutritional Status—ABCDEFG: Narrative Review (2026) · cites this paper as [141]
Cites
Rayyan-a web and mobile app for systematic reviews.
Ouzzani, M., Hammady, H., Fedorowicz, Z., & Elmagarmid, A. (2016) · Systematic Reviews · doi:10.1186/s13643-016-0384-4 · Cited by 26,092 · see citing works
Khera, A. V., Chaffin, M., Aragam, K. G., Haas, M. E., Roselli, C., Choi, S. H., Natarajan, P., Lander, E. S., Lubitz, S. A., Ellinor, P. T., et al. (2018) · Nature Genetics · doi:10.1038/s41588-018-0183-z · Cited by 2,953 · see citing works
Glanz, K., & Bishop, D. B. (2010) · Annual Review of Public Health · doi:10.1146/annurev.publhealth.012809.103604 · Cited by 2,336 · see citing works
Power and predictive accuracy of polygenic risk scores
Dudbridge, F. (2013) · PLoS Genetics · doi:10.1371/journal.pgen.1003348 · Cited by 1,509 · see citing works
The stepped wedge cluster randomised trial: rationale, design, analysis, and reporting
Hemming, K., Haines, T. P., Chilton, P. J., Girling, A. J., & Lilford, R. J. (2015) · BMJ · doi:10.1136/bmj.h391 · Cited by 1,410 · see citing works
Closing the Gap between Methodologists and End-Users: <i>R</i> as a Computational Back-End
Wallace, B. C., Dahabreh, I. J., Trikalinos, T. A., Lau, J., Trow, P., & Schmid, C. H. (2012) · Journal of Statistical Software · doi:10.18637/jss.v049.i05 · Cited by 1,125 · see citing works
The Genetic Basis of Mendelian Phenotypes: Discoveries, Challenges, and Opportunities
Chong, J. X., Buckingham, K. J., Jhangiani, S. N., Boehm, C., Sobreira, N., Smith, J. D., Harrell, T. M., McMillin, M. J., Wiszniewski, W., Gambin, T., et al. (2015) · The American Journal of Human Genetics · doi:10.1016/j.ajhg.2015.06.009 · Cited by 643 · see citing works
Gögebakan, Ö., Kohl, A., Osterhoff, M. A., van Baak, M. A., Jebb, S. A., Papadaki, A., Martinez, J. A., Handjieva-Darlenska, T., Hlavaty, P., Weickert, M. O., et al. (2011) · Circulation · doi:10.1161/circulationaha.111.033274 · Cited by 180 · see citing works
Disclosure of genetic information and change in dietary intake: a randomized controlled trial
Nielsen, D. E., & El-Sohemy, A. (2014) · PLoS ONE · doi:10.1371/journal.pone.0112665 · Cited by 157 · see citing works
Livingstone, K. M., Celis-Morales, C., Navas-Carretero, S., San-Cristobal, R., Macready, A. L., Fallaize, R., Forster, H., Woolhead, C., O’Donovan, C. B., Marsaux, C. F., et al. (2016) · The American Journal of Clinical Nutrition · doi:10.3945/ajcn.115.129049 · Cited by 115 · see citing works
Harvie, M., Pegington, M., French, D., Cooper, G., McDiarmid, S., Howell, A., Donnelly, L., Ruane, H., Sellers, K., Foden, P., et al. (2019) · BMC Cancer · doi:10.1186/s12885-019-6279-8 · Cited by 34 · see citing works
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The Seven Methods for the Evaluation of Nutritional Status—ABCDEFG: Narrative Review
Zambrano-Villacres, R., Arteaga-Pazmiño, C., Guevara Castillo, W. D., Herrera-Fontana, M. E., Domínguez Brito, L. D., Becerra Granados, L. M., Recoba-Obregón, P. E., Rodríguez-Veintimilla, D., Bressi, V., Andrade-Molina, D., et al. (2026) · Applied Sciences · doi:10.3390/app16020845 · Cited by 5 · see citing works
- Authors
- Ellis, A., Rozga, M., Braakhuis, A., Monnard, C. R., Robinson, K., Sinley, R., Wanner, A., & Vargas, A. J.
- Affiliations
- University of Alabama (US)
- Academy of Nutrition and Dietetics (US)
- University of Auckland (NZ)
- University of Fribourg (CH)
- University of Iowa (US)
- Metropolitan State University of Denver (US)
- National Institutes of Health (US)
- Corresponding author
- Rozga, Mary
- ORCID
- Venue
- Journal of the Academy of Nutrition and Dietetics
- Publisher
- Elsevier BV
- Published
- 2021-03
- Volume
- 121
- Issue
- 3
- Pages
- 582-605.e17
- ISSN
- 2212-2672 (ISSN-L)
- OpenAlex
- W3036386313
- Cited by
- 27
- References
- 11
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 4 · 2023: 8 · 2022: 4 · 2021: 4 · 2020: 3
- FWCI
- 0.68
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the Academy of Nutrition and Dietetics (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Academy of Nutrition and Dietetics
- Academy of Nutrition and Dietetics Foundation
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Nutrition, Genetics, and Disease
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
- Health Sciences › Health Professions › Health Information Management › Dietetics, Nutrition, and Education
- Keywords
- nutrigenomics, genetic testing, nutrition counseling, personalized nutrition, non-alcoholic fatty liver disease, fat loss, Nutrition Care Process, quality of life, disease prevention, adverse events, body composition, cholesterol, body mass index
- MeSH terms
- Adult, Child, Counseling, Diet, Dietetics, Female, Genetic Testing, Genotype, Humans, Male, Nutritional Physiological Phenomena, Randomized Controlled Trials as Topic, Treatment Outcome, Evidence-Based Medicine, Nutrition Therapy, Nutrigenomics
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