Diet and exercise help you feel better almost immediately, and can change your entire outlook.

Diet and exercise can also prevent common diseases or help people bounce back quicker after a diagnosis.

One of the most common diseases afflicting women is osteoporosis. Some studies suggest that one in five women over the age of 50 have it.

Alexis Saire is a health educator and personal trainer at Florida Hospital. She says osteoporosis is a silent disease in the beginning because it has little or no symptoms.

She explains how old you should be when you get your first bone density scan, what it tells you about the health of your bones and how frequently you should get the scans. Plus, find out why she thinks the number of women with osteoporosis gets higher every year.

Plus, she weighs in on the old conventional wisdom that there's nothing you can do to prevent the loss of muscle mass and bone density as we age. Is it true? What are some exercises that anyone of any fitness level, included those who are bedridden, do to improve their health immediately.

And, Alexis explains how exercising over 50 is different than it was in the past.

To get more fitness and wellness tips, visit Healthy100.org.

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