18 million people in the United States struggle with alcohol use disorders. People who abuse alcohol and people with alcoholism are at increased risk for serious health problems, such as cancer, liver problems, brain damage, and weakened immune system. Alcohol is the most widely abused substance in the U.S.
In 2014, approximately 462 million adults worldwide were underweight. Weighing too little can contribute to a weakened immune system, fragile cones, and other chronic diseases. According to one study, being underweight was associated with a 140% greater risk of early death in men, and 100% in women. In comparison, obesity