In some respects, coffee is regaining its honor for wellness benefits. After 25 years of labeling coffee a carcinogen linked to bladder cancer, the World Health Organization announced that drinking coffee reduces the risk for liver and uterine cancer. Some people worry drinking coffee can be bad for you because it might increase the risk of heart disease, stunt growth or lead to stomach ulcers and heartburn, But research on coffee have mostly shown no harm to people's health.