Bone health becomes increasingly important as we age. Your bones naturally lose density over time, and understanding how this process works—and what you can do about it—helps you make informed decisions about your health and lifestyle.
Your bones are living tissue that constantly break down and rebuild. In younger years, new bone forms faster than old bone breaks down, so bone mass increases. Most people reach peak bone mass around age 30. After that, bone remodeling continues, but you lose slightly more bone mass than you gain.
This process accelerates for women after menopause, when estrogen levels drop sharply. Estrogen helps bones retain calcium and other minerals. Men typically experience a more gradual decline in bone density throughout their lives, though the rate can increase after age 70.
The result: bones become more porous and fragile over time. This increased fragility is what healthcare providers watch for, since it directly affects your risk of fractures.
Your bone density and strength aren't predetermined. Several factors influence how quickly your bones change:
Nutrition — Calcium and vitamin D are the primary nutrients your bones need. Calcium provides structure; vitamin D helps your body absorb it. Without adequate intake of both, your bones weaken faster.
Physical activity — Weight-bearing exercises (walking, climbing stairs, resistance training) stress your bones in ways that stimulate them to stay strong. Sedentary lifestyles accelerate bone loss.
Hormone levels — Beyond estrogen, thyroid hormones and parathyroid function affect bone remodeling. Certain medications (like some steroids) can also impact bone health.
Family history — Genetics influence how dense your bones are and how quickly you lose density.
Lifestyle habits — Smoking and excessive alcohol consumption are linked to faster bone loss. Adequate sleep and stress management also play supporting roles.
Healthcare providers measure bone density using a DEXA scan (dual-energy x-ray absorptiometry), which compares your bone density to that of a healthy young adult. Results fall into categories:
The specific numbers your scan produces matter less than understanding where you fall on this spectrum and what that means for your risk profile. Someone with low bone mass may never fracture a bone, while another person might. Other factors—balance, fall history, muscle strength—also influence actual fracture risk.
Get enough calcium and vitamin D — This isn't optional; it's foundational. Your bones can't stay strong without these nutrients. Sources include dairy products, leafy greens, fortified foods, and sunlight exposure (for vitamin D).
Stay active — Weight-bearing and muscle-strengthening exercise sends a signal to your bones that they need to stay strong. Walking, dancing, gardening, and resistance training all count.
Avoid smoking and limit alcohol — Both interfere with bone remodeling and increase fracture risk.
Have your bones assessed — If you're over 50, talk with your doctor about whether a bone density test makes sense for you. Men over 70 and postmenopausal women especially benefit from knowing their baseline.
Address fall risk — Even strong bones fracture if you fall hard. Vision checks, balance training, removing home hazards, and reviewing medications that affect balance are all part of bone safety.
Bone health exists on a spectrum, and the right approach for you depends on your age, sex, risk factors, family history, and current density. Some people benefit from medication; others do well with lifestyle changes alone. A healthcare provider can assess your individual situation, order appropriate testing, and discuss options that fit your specific circumstances.
Your bones are resilient and responsive to the choices you make now. Small, consistent actions around nutrition and movement compound over time.
