Hello dear, As mentioned in your post, even though the problem of overweight in your family seems genetic, it is always better to rule out any underlying systemic cause for the same. Investigations like complete blood count, Thyroid profile, estimation of blood sugar level, etc will be helpful regarding this. To tackle the problem of overweight, a low calorie low fat diet should be followed along with regular exercise, such as: 1. Avoid eating white breads, rice and pasta. They have high calories and increases the blood sugar level. 2. It is better to have complex carbohydrates such as whole wheat bread, oatmeal and brown rice. 3. Consume low fat versions of milk and cheese and avoid oily foods. 4. Have a diet rich in low calorie protein foods such as egg whites, skinless chicken, fish, etc. 5. It is better to avoid soft drinks and fruit juices which are rich in calories. Instead, drink large amount of water (about 6 to 8 glasses) throughout the day. 6. Dietary fiber such as whole grains, vegetables, fruits, and nuts can also be included in the diet. Wishing you a Good Health. Thanks & take care.