Metabolic rate increased significantly during the 3 hr after caffeine ingestion. In the first trial 8 mg/kg caffeine was compared with a placebo in normal weight subjects. Caffeine speeds up pulse rate and when your pulse rate accelerates, it also speeds up your metabolism that helps you burn calories faster as it affects your digestive system. A series of four trials was carried out to investigate the effects of caffeine and coffee on the metabolic rate and substrate utilization in normal weight and obese individuals. The study did yield an unexpected result: Drinking coffee was associated with a modest loss of body fat.Īccording to a JanuHealthDay News article, Derrick Alperet, a study coauthor and research fellow in the Department of Nutrition, and colleagues think that the fat loss may be due to the caffeine in coffee increasing the drinker’s metabolism, which may burn more calories and cause a decrease in body fat. What exactly does caffeine do Aside from the fact that caffeine acts as adrenaline booster for your body, caffeine in coffees can also affect or alternate your metabolism. In the current study, coffee did not affect the study participants’ sensitivity to insulin – the hormone that regulates sugar levels in the blood. Coffee contains caffeine, a stimulant substance that is proven to increase the release of fats from the fat tissues and boost the resting metabolic rate. Previous observational studies have linked drinking coffee with a lower risk of type 2 diabetes, yet coffee’s effects on blood sugar metabolism have not been well defined. The study was designed to determine if coffee consumption reduces the risk of developing type 2 diabetes. The finding comes from a 24-week investigation in which 126 overweight, non-insulin sensitive adults drank daily either four cups of regular coffee or four cups of a coffee-like placebo beverage. Chan School of Public Health researchers. Drinking four cups of coffee daily could reduce body fat by about 4%, according to a recent study by Harvard T.H.
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