1. Excessive amount of eating
2. High Calorie, sweet, oily food consumption
3. No exercise
4. No sexual interaction
5. Daytime sleep
6. No tensions in life
7. Not bothered attitude
8. Hereditary

Due to any of these causes excessive amount of fat or an undigested fat gets accumulated in different parts/organs of the body and causes various diseases.

When this excess amount of fat gets deposited in any gland, it disturbs the secretion of that particular gland, due to which one suffers from obesity related Hypothyroidism, Type II DiabetesMellitus, Coronary heart disease, etc.