Substance Abuse
Aside from diets and diseases that have already been discussed, it is essential to know that rapid weight loss can also be a symptom of addiction. Substance abuse can contribute to weight loss, either directly or indirectly. Not all drugs can cause weight loss, but stimulants such as cocaine and methamphetamine are often appetite suppressants. Regular cocaine users were reported to have decreased appetite and fewer balanced meals as compared to non-users. Methamphetamine users may also have reduced appetite, leading to muscle loss.
Aside from changes in appetite, people using stimulants may be more hyperactive than usual. Extreme hyperactivity, accompanied by increased heart rate and body temperature, contributes to further weight loss.
Alcohol abuse may lead to both weight gain and weight loss. Some people tend to binge eat while drinking alcohol, and alcohol itself has high caloric content. However, in chronic users, the reverse can happen. Chronic alcohol abuse may affect the linings of the stomach and intestines and alter bowel movement. As a result, it can lead to chronic diarrhea and vomiting and contribute to overall weight loss.
