Healthy lifestyle Main points

1...Modest exercise program is must, and highlights of some benifits are . .. 
Weight loss, Lower blood pressure, Stronger bones and a decreased risk of osteoporosis, Elevated levels of HDL cholesterol and decreased levels of triglycerides and LDL cholesterol, increased strength and coordination, improved sensitivity to insulin, better immune system. 
Hence it can be said that modest exercise program can avoid developing many diseases.

2. Healthy Diet... Which includes atleast 6/7 servings of fruits and vegetables daily can enjoy further health benefits....

Weight Loss, Decreased risk of diabetes, decreased risk of heart disease, decreased risk of almost all Cancers, decreased risk of elevated cholesterol, an enhanced immune system, increased sensitivity to insulin, and increased energy levels.... Means a healthy diet is sure to win situation.

3 . Nutritional supplements.... Basic health benefits of nutritional supplements are....
Good immunity, an enhanced antioxidants defence system, a decreased risk of coronary artery disease, a decreased risk of stroke, a decreased risk of Cancer. A decreased risk of arthritis, macular degeneration and cataract,  decreased risk of Alzheimer's dementia , Parkinson's disease, and many other chronic degenerative diseases.
                                         ----Dr. Sunil Srivastav