Dried peas fiber may have a profound and positive effect on induced weight loss in obese subjects, the University of Calgary study suggested.
The dried pea is a small but nutritionally mighty member of the legume family, genus Pisum belongings to the family Fabaceae with a healthy source of proteins, fibers, vitamins, and minerals.
In a double-blind, placebo-controlled, parallel-group study, overweight and obese (BMI = 25-38) adults will be randomized to either a 15 g/d yellow pea fiber supplemented group or isocaloric placebo group for 12 weeks (n = 30/group), researchers found that peas fibers display a significant effect in weight reduction through various mechanisms, including improvement of metabolic syndrome and gut microbiota expression.
Dr. Jennifer E Lambert, the lead author said, "Feeding the prebiotic fiber oligofructose for 12 weeks reduced levels of the orexigenic hormone ghrelin and increased levels of the anorexigenic hormone PYY in overweight adults which corresponded with lower self-reported energy intake [13]. In the long-term, these changes in postprandial peptide secretion may promote weight loss through reductions in ad libitum food intake", and "Both bacterial abundance and composition can be altered with lifestyle changes. Indeed, part of the role of intestinal bacteria in weight control has been elucidated through the study of patients receiving bariatric surgery".
Additionally, they examined the nutritional effects and acceptability of two high-fiber hypocaloric diets differing in sources of fiber: (a) beans or (b) fruits, vegetables, and whole grains of 2 men, 18 women, mean age = 46.9 and mean BMI = 30.6 with participants completed 3-day food diaries in each of the two baseline weeks, researchers indicated that
1. There is no difference in the outcome of the fiber intake of all groups. Both diets increased fiber intake from 16.6 compared to the baseline
2. Fiber intake showed a consistent effect in reduced weight status overtreatment in both groups with a mean weight loss was 1.4 kg
3. The returned questionnaire also exerted a hunger decrease and fullness increase during the testing period in both groups
4. Both diets were rated as potentially acceptable for as long as six months.
The findings suggested that beans and fruits, vegetables, and whole grains fiber demonstrated similar efficacy in increased satiation and reduced hunger in induced weight loss.
Interestingly, in a total of 173 women and men, with a mean body mass index of approximately 36 kg m(-2) (one-fifth with diabetes type 2) randomized to a high-fiber bean-rich diet with fiber intakes of 35.5 (18.6) g day(-1) for women and 42.5 (30.3) g day(-1) for men or a low-carbohydrate diet, researchers found that in 123 (71.1%) completers at 16 weeks
1. The m mean (SD) weight loss of both groups was 4.1 (4.0) kg
2, the Fiber dietary group expressed a higher weight loss of 5.2 in compared to 4.5 kg in the low-carbohydrate group
3. A high-fiber diet showed a better decreased low-density lipoprotein (LDL)-cholesterol and total cholesterol levels compared to a low-carbohydrate diet.
Dr. Tonstad S, the lead author said."After 52 weeks, the low-carbohydrate (n = 24) group tended to retain weight loss better than the high-fiber group (P = 0.06), although total cholesterol remained lower with the bean-rich diet (P = 0.049)."
Taking it all together, there is no doubt that fibers of beans or other sources may have strong implications in reduced risk and treatment of overweight and obese subjects. The amounts of fiber intake should be consulted with your doctors to prevent overdoses and constipation.
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Sources
(1) Evaluation of yellow pea fibre supplementation on weight loss and the gut microbiota: a randomizedcontrolled trialby Jennifer E Lambert,1 Jill A Parnell,2 Jay Han,3 Troy Sturzenegger,3 Heather A Paul,4 Hans J Vogel,4,5 and Raylene A Reimer
1,4(PMC)(2) Dietary adherence and satisfaction with a bean-based high-fiber weight loss diet: a pilot study by Turner TF1, Nance LM1, Strickland WD1, Malcolm RJ1, Pechon S1, O'Neil PM1.(PubMed)
(3) A high-fibre bean-rich diet versus a low-carbohydrate diet for obesity by Tonstad S1, Malik N, Haddad E.(PubMed)
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