The American Academy of Family Physicians says these conditions may make weight loss more of a challenge:
- Hormonal disorders, such as diabetes, hypothyroidism, Cushing's disease and polycystic ovary syndrome.
- Cardiovascular problems, including heart-valve disorders and congestive heart failure.
- Disorders affecting sleep, including obstructive sleep apnea and upper airway resistance syndrome.
- Eating disorders, such as bulimia and carbohydrate craving syndrome.