The best way is to drink milk and exercise, since Milk gives calcium and exercise helps keeps bones strong.
A Paleo diet also known as the Stone Age diet has the same food our hunter-gather ancestors ate such as fruits,meats,seafood and nuts. The diet lessens the body's glycemic load, has a healthy ratio of saturated to unsaturated fatty acids, increases vitamin and nutrient consumption and contains an optimal balance of protein, fat and carbohydrates.
Try your hardest to solve the problem in the situation