Hy my friends i am a nutritionist i have studied about many diseases and their cures which have a deep relationship with our life styles.All these issues are disorders that can be controlled but can't be cured.
Obesity is one of them which has a deep relation with our lifestyle. People with sedentary life style has such problems of obesity. Obesity is due to many underlying issues such has over eating, genetic leptin disorder, nibbling, fast food consumption and sedentary life style.
Now you'll think how a sedentary life style has an effect on our weight. When we consume food and don't do efforts to effort to burn its calories then your weight automatically increases. When you output is not equal to your input then you tends to put on weight. In this ways your weight increases.
Obesity is the cause of many other diseases and disorders like hypertension, depression, heart diseases, metabolic disorders like pcos in females, GI problems and many other.