It's never too early to start instilling healthy habits in young children. The National Bone Health Campaign has taken this tactic and promotes bone-healthy habits for girls ages 9-12. Building strong bones -- especially before women reach age 30 -- is a critical preventive measure for osteoporosis. Helping young girls understand bone-healthy habits encourages them to maintain these behaviors for a lifetime.

Milk isn't the only tool in a parent's bone-health toolbox. Plenty of foods are rich in calcium. Other dairy products like yogurt and cheese are also good choices -- but opt for low-fat versions when possible. Many dark green vegetables such as bok choy, spinach, kale, broccoli, and collards are good sources of calcium. Sesame seeds, almonds, and whole-wheat English muffins are other unexpected calcium-rich foods. In addition, you can also find calcium-fortified orange juice, soy drinks, and tofu.

Nutrition is just one half of the bone-health equation. Get your kids outside and playing! Weight-bearing activities like basketball, jogging, karate, hiking, and jumping rope build muscle mass and strengthen bone. (Non-weight-bearing activities like swimming and bike riding are also great for your child's health but don't contribute to bone strength.)

Powerful Girls Have Powerful Bones is a fun and informative website with information, resources, and games for girls.