While moderate coffee drinking can be good for you by lowering your risk of Type 2 diabetes and cardiovascular disease, drinking too much may make you gain weight. While high-calorie drinks, such as flavored lattes, cappuccinos and syrupy, blended coffee drinks, can pack on the pounds, even low-calorie drip coffee may cause weight gain.
An Australian study in 2013 found that drinking five cups of coffee a day may make you gain weight, according to an article in the "New York Daily News." The research was conducted using mice and published in the "Journal of Agricultural and Food Chemistry." Metabolic syndrome is to blame for the weight gain, especially the contribution to fat stores around the stomach. Along with five cups of coffee comes a whole lot of polyphenols, which can contribute to metabolic syndrome. The hallmarks of metabolic syndrome include storing fat in your stomach and waist, and high blood pressure, which could lead to serious complications such as diabetes and strokes. All the mice in the study gained the same weight whether they drank five cups of caffeinated or decaffeinated coffee. This suggests that it's the polyphenols and not the caffeine that led to the weight increase.