LOW-CARB DIETS MAKE THE BODY STORE FAT … The latest research into human biology and nutrition has revealed the massive influence food has on body-composition. Certain nutrients act as hormones – chemical messengers in the blood, which can totally transform the body’s metabolism. When fatty acids (metabolites of fats and oils) bind to the PPAR-gamma [Peroxisome Proliferator-Activated Receptor-gamma] receptor, the receptor switches on genes which make more fat cells and promote fat storage. PPAR-gamma also reduces the production of Uncoupling Protein-1, a key messenger in energy metabolism. Less UP-1 means more fat storage. In short, the sort of high-fat diet seen in low-carb, Paleo and Atkins diets tips the body’s metabolism towards fat storage and concomitant obesity. Happily, not all fatty acids activate PPAR-gamma. Omega 3 oils metabolizes to DHA and EPA fatty acids, which activate a cell-surface receptor called GPR120, moderating inflammation, blood-sugar and body-fat. Foods’ hormone-like properties also include amino acids (the components of dietary protein). A protein involved in muscle building – mTOR – also plays a vital role in preventing overeating. Leucine (abundant in soya, peanuts and BCAAs) activates mTOR – a likely explanation for high-protein diets being associated with fat-loss. Similarly, complex carbohydrates (broken down by intestinal microbes to short-chain fatty acids) and l-glutamine (an amino acid) bind to specialized receptors in the gut to stimulate the release of Glucagon-Like Peptide-1, a powerful appetite-suppressing hormone. Take-home messages to stay lean: • Cut back on all fats except omega 3 oils; • Increase intake of leucine and glutamine; • Exchange sugary carbs for complex carbs, such as starch and cellulose. *Source: New Scientist magazine, 3.Aug,13.
Posted on: Thu, 08 Aug 2013 13:38:44 +0000
Trending Topics
Recently Viewed Topics
© 2015