Re: What's so great about lentils
Diet rich in beans, lentils helps control diabetes
CHICAGO -- A diet rich in nuts, beans and lentils beat a high cereal-fiber diet in controlling symptoms of diabetes and heart disease, Canadian researchers said on Tuesday.
They said the study was aimed at settling the question of which diet could help diabetics gain better control over their disease, but it could be helpful for others as well. Dr. David Jenkins of St. Michael?s Hospital and the University of Toronto and colleagues studied 210 people with type 2 diabetes randomly selected to try one of two diets for six months. All were also treated with medications to control their blood sugar and had monthly blood tests.
People on the low-glycemic index diet ate an abundance of beans, peas, lentils, nuts and pasta. People in the high fiber group ate a largely ?brown? diet: whole grain breads and cereals, brown rice, potatoes with skins and whole wheat bread, crackers and cereals. At the end of the six months, people on the low-glycemic diet lost slightly more weight, had significantly better control of their blood sugar and had higher levels of high density lipoprotein or HDL, the so-called good cholesterol.
http://www.chinapost.com.tw/health/diabetes/2008/12/18/188293/Diet-rich.htm
Effect of a Low?Glycemic Index or a High?Cereal Fiber Diet on Type 2 Diabetes
A Randomized Trial
David J. A. Jenkins, MD; Cyril W. C. Kendall, PhD; Gail McKeown-Eyssen, PhD; Robert G. Josse, MB, BS; Jay Silverberg, MD; Gillian L. Booth, MD; Edward Vidgen, BSc; Andrea R. Josse, MSc; Tri H. Nguyen, MSc; Sorcha Corrigan, BSc; Monica S. Banach, BSc; Sophie Ares, MA, RD, CDE; Sandy Mitchell, BASc, RD; Azadeh Emam, MSc; Livia S. A. Augustin, MSc; Tina L. Parker, BASc, RD; Lawrence A. Leiter, MD
JAMA. 2008;300(23):2742-2753.
Context Clinical trials using antihyperglycemic medications to improve glycemic control have not demonstrated the anticipated cardiovascular benefits. Low?glycemic index diets may improve both glycemic control and cardiovascular risk factors for patients with type 2 diabetes but debate over their effectiveness continues due to trial limitations.
Objective To test the effects of low?glycemic index diets on glycemic control and cardiovascular risk factors in patients with type 2 diabetes.
Design, Setting, and Participants A randomized, parallel study design at a Canadian university hospital research center of 210 participants with type 2 diabetes treated with antihyperglycemic medications who were recruited by newspaper advertisement and randomly assigned to receive 1 of 2 diet treatments each for 6 months between September 16, 2004, and May 22, 2007.
Intervention High?cereal fiber or low?glycemic index dietary advice.
Main Outcome Measures Absolute change in glycated hemoglobin A1c (HbA1c), with fasting blood glucose and cardiovascular disease risk factors as secondary measures.
Results In the intention-to-treat analysis, HbA1c decreased by ?0.18% absolute HbA1c units (95% confidence interval [CI], ?0.29% to ?0.07%) in the high?cereal fiber diet compared with ?0.50% absolute HbA1c units (95% CI, ?0.61% to ?0.39%) in the low?glycemic index diet (P < .001). There was also an increase of high-density lipoprotein cholesterol in the low?glycemic index diet by 1.7 mg/dL (95% CI, 0.8-2.6 mg/dL) compared with a decrease of high-density lipoprotein cholesterol by ?0.2 mg/dL (95% CI, ?0.9 to 0.5 mg/dL) in the high?cereal fiber diet (P = .005). The reduction in dietary glycemic index related positively to the reduction in HbA1c concentration (r = 0.35, P < .001) and negatively to the increase in high-density lipoprotein cholesterol (r = ?0.19, P = .009).
Conclusion In patients with type 2 diabetes, 6-month treatment with a low?glycemic index diet resulted in moderately lower HbA1c levels compared with a high?cereal fiber diet.
Trial Registration clinicaltrials.gov identifier: NCT00438698
Author Affiliations: Clinical Nutrition and Risk Factor Modification Center (Drs Jenkins, Kendall, R. Josse, and Leiter, and Messrs Vidgen and Nguyen, and Mss Corrigan, Banach, Ares, Mitchell, Emam, Augustin, and Parker) and Division of Endocrinology and Metabolism (Drs Jenkins, R. Josse, and Leiter), St Michael's Hospital, Toronto, Ontario; Dalla Lana School of Public Health (Dr McKeown-Eyssen), Department of Nutritional Sciences (Drs Jenkins, Kendall, McKeown-Eyssen, R. Josse, and Leiter, and Messrs Vidgen and Nguyen, and Mss A. Josse, Banach, Emam, and Augustin), and Department of Medicine (Drs Jenkins, R. Josse, Silverberg, Booth, and Leiter), University of Toronto, Toronto, Ontario; Sunnybrook and Women's College Health Sciences Center, Toronto, Ontario (Dr Silverberg); and College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan (Dr Kendall), Canada.
http://jama.ama-assn.org/cgi/content/short/300/23/2742