Diets deficient in protein often increase food consumption, body weight and fat mass; however, the underlying mechanisms remain poorly understood. We compared the effects of diets varying in protein concentrations on energy balance in obesity-prone rats. The protein-free and very low protein diets decreased plasma concentrations of multiple essential amino acids, anorexigenic and metabolic hormones, but these diets increased the tissue expression and plasma concentrations of fibroblast growth factor Protein-free and very low protein diets induced fatty liver, reduced energy digestibility, and decreased lean mass and body weight that persisted beyond the restriction period. In contrast, moderately low protein diets promoted gain in body weight and adiposity following the period of protein restriction.
Nutrition, Metabolism and Cardiovascular Diseases. Differential adrenergic regulation of the gene protein of the beta-adrenoceptor subtypes beta1, beta2 and beta3 in brown adipocytes. Trends in Biochemical Sciences. Low protein, vegetarian diets have been diet to be linked to longer life. With and chicken usually have higher amounts of protein in them. Loss of Muscle Mass. Read our editorial siet to learn more about how low fact-check and keep our content accurate, problems, and trustworthy. As a result, fluid accumulates in tissues, causing swelling. For example, research suggests that older adults may need extra protein, due to the muscle wastage associated with advancing age.
Sci Rep. September 10, People who are highly active, pregnant, or are trying to build muscle mass may need more than these recommended amounts. Journal of the American Dietetic Association. The enteroendocrine cells of the gut secrete multiple hormones including peptide YY PYY which is postulated to play a role in the anorexigenic effects of high protein diets 24 ; it is unknown whether gut hormones mediate the effects of low protein diets on energy balance. Therefore, despite weight loss with 0P and 5P diets, the increased hepatic lipidosis likely negated any improvements in glucose tolerance. A corollary to this hypothesis is that a reduction in the dietary protein concentration would increase total energy intake, due to overconsumption of carbohydrates and fat, in an effort to meet protein requirements.