Q: I’ve been hearing a lot about bone density lately, especially as I approach my 40s. Why is it important, and what steps can I take to maintain or improve it?
A: That’s a great question, and one that becomes more important with age. Bone density refers to how much mineral content, mostly calcium and phosphorus, is packed into your bones. It’s a key measure of bone strength, and maintaining it can help reduce the risk of fractures, mobility issues and conditions like osteopenia and osteoporosis, which affect half of adults over 50 years of age.
We reach our peak bone mass in our late 20s to early 30s. After that, bone breakdown gradually begins to outpace bone formation, silently and without warning. For women, this process accelerates significantly in the years following menopause, due to the drop in estrogen, a hormone that helps protect bones. In fact, women can lose up to 20% of their bone density in the five to seven years after menopause. This is why postmenopausal bone health deserves extra attention — especially if there’s a family history of osteoporosis or other risk factors like smoking, low body weight or certain medications.
The good news? There are effective, manageable ways to support your bones.
One of the best things you can do is move. Weight-bearing activities, like walking, dancing or stair climbing, help stimulate bone growth. Jumping, even just a few times a day, has been shown to be beneficial. Strength training is also critical. Exercises like squats, lunges and resistance band work build the muscles that support your bones and help prevent falls.
Balance and flexibility exercises like yoga and tai chi are also helpful — not because they build bone directly, but because they reduce fall risk, which is vital for avoiding fractures as we age.
Nutrition plays a key role. Calcium is essential, and it’s found in dairy products, leafy greens, tofu and fortified foods. But calcium doesn’t work without vitamin D, which helps your body absorb it, so a combination of safe sun exposure, vitamin D-rich foods or supplements might be needed. Other nutrients like magnesium, potassium and vitamin K2 support the overall bone matrix and strength.
If you’re postmenopausal, talk to your doctor about whether you should get a bone density scan (called a DEXA scan). It’s a simple, painless test that can help identify early signs of bone loss and guide your prevention plan.
Also, take a look at your lifestyle habits. Smoking and heavy alcohol use can both accelerate bone loss, so reducing or eliminating those factors can make a real difference.
Bone health is a lifelong investment. Whether you’re in your 30s, 50s or beyond, it’s never too late to take steps that support stronger, more resilient bones.
Dr. Ethan Zimmerman is a family medicine physician with Beacon Family Practice Red Bank and a member of the Chattanooga-Hamilton County Medical Society.