Don't believe everything you hear, these four popular coffee myths are actually not true. Although coffee can increase your metabolism, drinking coffee alone will not help you lose weight. Coffee can act as an appetite suppressant for some but this is not true for everyone, as our bodies react differently to caffeine. According to the National Coffee Association, roasting doesn't change the amount of caffeine in coffee beans. Dark roast coffee does not necessarily have a higher caffeine content. Coffee does not directly stunt your growth. however, consuming coffee instead of other nutritious foods and beverages may affect the growth of teenagers. A 2019 research study found that drinking one cup of coffee a day was associated with a 3% reduced risk of dying. While drinking three cups was linked to a 13% reduced risk of dying. So contrary to popular belief, drinking coffee does not shorten your lifespan.