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Clinical Research

Physicians Committee Publications

The Physicians Committee designs and conducts clinical research studies on nutrition and health. Dietary interventions have appeared promising in investigations carried out by numerous research teams, including our own. We have conducted studies that examine the effects of diet on weight, cardiovascular risk, cancer prevention and survival, and other health issues. The Physicians Committee's research aims to develop and test practical interventions that can be used by doctors and patients. The Physicians Committee also conducts detailed reviews of the scientific literature, including meta-analyses.

Diabetic Neuropathy

List: Bunner AE, Wells CL, Gonzales J, Agarwal U, Bayat E, Barnard ND. A dietary intervention for chronic diabetic neuropathy pain: a randomized controlled pilot studyNutrition & Diabetes. 2015;5:e158.

Diabetes Studies


GEICO Studies

Reviews, Editorials, and Additional Research

Kahleova H, Klementova M, Herynek V, et al. The effect of a vegetarian vs conventional hypocaloric diabetic diet on thigh adipose tissue distribution in subjects with type 2 diabetes: a randomized studyJ Am Coll Nutr. 2018;36:364-369.

Barnard ND, Willett WC, Ding EL. The misuse of meta-analysis in nutrition researchJAMA. 2017;318:1435-1436.

Yokoyama Y, Levin SM, Barnard ND. Association between plant-based diets and plasma lipids: a systematic review and meta-analysisNutr Rev. 2017;75:683-698.

Kahleova H, Levin S, Barnard N. Cardio-metabolic benefits of plant-based dietsNutrients. 2017; 9. pii: E848.

Kahleova H, Lloren JI, Mashchak A, Hill M, Fraser GE. Meal frequency and timing are associated with changes in body mass index in Adventist Health Study 2J Nutr. 2017;147:1722-1728.

Freeman AM, Morris PB, Barnard N, et al. Trending cardiovascular nutrition controversiesJ Am Coll Cardiol. 2017;69:1172-1187.

Barnard ND, Levin SM, Yokoyama Y. A systematic review and meta-analysis of changes in body weight in clinical trials of vegetarian dietsJ Acad Nutr Diet. 2015;115:954-969.

Yokoyama Y, Barnard ND, Levin SM, Watanabe M. Vegetarian diets and glycemic control in diabetes: a systematic review and meta-analysisCardiovasc Diagn Ther. 2014;4:373-82.

Bunner AE, Agarwal U, Gonzales JF, Valente F, Barnard ND. Nutrition intervention for migraine: a randomized crossover trialJ Headache Pain. 2014 Oct 23;15:69

Barnard ND, Bunner AE, Agarwal U. Saturated and trans fats and dementia: a systematic reviewNeurobiol Aging. 2014;35(Suppl 2):S65-73.

Barnard ND, Bush AI, Ceccarelli A, et al. Dietary and lifestyle guidelines for the prevention of Alzheimer's diseaseNeurobiol Aging. 2014;35(Suppl 2):S74-78.

Yokoyama Y, Nishimura K, Barnard ND, et al. Vegetarian diets and blood pressure: a meta-analysis. JAMA Intern Med. 2014;174:577-587.

Gonzales JF, Barnard ND, Jenkins DJ, Lanou AJ, Davis B, Saxe G, Levin S. Applying the precautionary principle to nutrition and cancerJ Am Coll Nutr. 2014;33:239-246.

Barnard ND. The physician's role in nutrition-related disorders: from bystander to leaderVirtual Mentor. 2013;15:367-372.

Agarwal U. Rethinking red meat as a prevention strategy for iron deficiencyInfant, Child, & Adolescent Nutrition. 2013;5:231-235.

Trapp CB, Barnard ND. Usefulness of vegetarian and vegan diets for treating type 2 diabetesCurr Diab Rep. 2010;10:152-158.

Trapp C, Barnard N, Katcher H. A plant-based diet for type 2 diabetes: scientific support and practical strategiesDiabetes Educ. 2010;36:33-48.

Berkow SE, Barnard N, Eckart J, Katcher H. Four therapeutic diets: adherence and acceptability. Can J Diet Pract Res. 2010;71:199-204.

Barnard ND. Trends in food availability, 1909-2007Am J Clin Nutr. 2010;91:1530S-1536S.

Lanou AJ. Should dairy be recommended as part of a healthy vegetarian diet? Am J Clin Nutr. 2009;89:1638S-1642S.

Barnard ND, Levin S. Vegetarian diets and disordered eatingJ Am Diet Assoc. 2009;109:1523; author reply 1523-1524.

Spencer EH, Ferdowsian HR, Barnard ND. Diet and acne: a review of the evidenceInt J Dermatol. 2009;48:339-347.

Ferdowsian HR, Barnard ND. Effects of plant-based diets on plasma lipidsAm J Cardiol. 2009;104:947-956.

Barnard ND, Katcher HI, Jenkins DJ, Cohen J, Turner-McGrievy G. Vegetarian and vegan diets in type 2 diabetes managementNutr Rev. 2009;67:255-263.

Lanou AJ, Barnard ND. Dairy and weight loss hypothesis: an evaluation of the clinical trialsNutr Rev. 2008;66:272-279.

Turner-McGrievy GM, Barnard ND, Scialli AR. A two-year randomized weight loss trial comparing a vegan diet to a more moderate low-fat dietObesity (Silver Spring). 2007;15:2276-2281.

Barnard ND, Scialli AR, Turner-McGrievy G, Lanou AJ, Glass J. The effects of a low-fat, plant-based dietary intervention on body weight, metabolism, and insulin sensitivityAm J Med. 2005;118:991-997. 

Turner-McGrievy GM, Barnard ND, Scialli AR, Lanou AJ. Effects of a low-fat vegan diet and a Step II diet on macro- and micronutrient intakes in overweight postmenopausal womenNutrition. 2004;20:738-746. 

Barnard ND, Scialli AR, Hurlock D, Bertron P. Diet and sex-hormone binding globulin, dysmenorrhea, and premenstrual symptomsObstet Gynecol. 2000;95:245-250.

Barnard ND, Scialli AR, Bertron P, Hurlock D, Edmonds K, Talev L. Effectiveness of a low-fat vegetarian diet in altering serum lipids in healthy premenopausal womenAm J Cardiol. 2000;85:969-972.