Question: what are 3 main causes of obesity?
Answer: Physical inactivity. ... 
Overeating. ... 
Genetics. ... 
A diet high in simple carbohydrates. ... 
Frequency of eating. ... 
Medications. ... 
Psychological factors. ... 
Diseases such as hypothyroidism, insulin resistance, polycystic ovary syndrome, and Cushing's syndrome are also contributors to obesity.