* Do regular weight-bearing exercise. Walking, jogging, aerobics and weight training strengthen bones.
* Do not forget vitamin D, plus calcium. Daily doses of these nutrients, found in food, fortified drinks such as milk and orange juice, or supplements, are vital for bone health.
* Don't delay. Keep active and get enough calcium and vitamin D early in life. Most bone is formed during childhood and adolescence, and many people start losing bone mass in their 30s.