Osteoporosis is a condition where your bones become thinner and more fragile

Osteoporosis means your bones have lost density — they contain less mineral and are weaker than they should be. This happens gradually, usually without any symptoms, which is why many people discover they have it only after a fall breaks a bone that would normally stay intact. The condition develops when bone loss happens faster than your body can replace it.

Your bones are living tissue that constantly breaks down and rebuilds. When you are younger, new bone forms faster than old bone is removed, so bone mass increases. Most people reach their peak bone mass around age 30. After that, bone remodeling continues, but you lose slightly more bone mass than you gain. The risk of osteoporosis depends on how much bone mass you build by age 30 and how quickly you lose it later.

Key Takeaways

  • Osteoporosis develops silently — you typically have no symptoms until a bone breaks from a minor fall or bump.
  • A bone density test called a DEXA scan measures your bone strength and tells you whether you have osteoporosis, low bone density, or normal bones.
  • Risk factors include age over 50, female sex (especially after menopause), family history, low calcium or vitamin D intake, and certain medications.
  • Treatment usually involves calcium and vitamin D, weight-bearing exercise, and sometimes medication to slow bone loss.

Who is at higher risk for osteoporosis

Age and sex matter most. Women over 50 and men over 70 have the highest risk. Women face greater risk after menopause because estrogen levels drop sharply, and estrogen helps protect bone density. Men's bone loss typically happens more slowly and starts later in life.

Family history plays a role — if your parents or siblings have osteoporosis or have broken a bone easily, your risk is higher. Other factors that increase risk include not getting enough calcium or vitamin D, being physically inactive, smoking, drinking alcohol heavily, and taking certain medications long-term (such as corticosteroids used for asthma or rheumatoid arthritis). Some medical conditions, like celiac disease, rheumatoid arthritis, and kidney or liver disease, also raise your risk.

How doctors test for osteoporosis

The standard test is a DEXA scan (dual-energy X-ray absorptiometry), which measures bone mineral density. It is painless, takes about 10 to 30 minutes, and uses very low levels of radiation — less than a standard chest X-ray. You lie on a table while a scanner passes over your bones, usually checking your hip, spine, and forearm.

The scan produces a score called a T-score, which compares your bone density to that of a healthy 30-year-old. A T-score of -1.0 or higher is considered normal. A score between -1.0 and -2.5 means you have low bone density (sometimes called osteopenia). A score of -2.5 or lower means you have osteoporosis. Your doctor may also order blood tests to check calcium, vitamin D, and other markers that affect bone health.

Doctors typically recommend DEXA screening for all women at age 65 and all men at age 70. Younger people with risk factors may be screened earlier. If you have already broken a bone from a minor fall, your doctor will likely order a DEXA scan to assess your bone strength.

What happens after a diagnosis

If your DEXA scan shows osteoporosis, your doctor will discuss ways to slow bone loss and reduce fracture risk. The first step is almost always ensuring you get enough calcium and vitamin D. Most adults need 1,000 to 1,200 mg of calcium daily and 600 to 800 IU of vitamin D daily, though requirements vary by age and sex. Your doctor can tell you whether you need supplements or whether diet alone is enough.

Weight-bearing exercise — walking, jogging, dancing, or strength training — helps maintain bone density and is recommended for most people with osteoporosis. Even 30 minutes most days of the week can make a difference. Your doctor or a physical therapist can suggest exercises that are safe for your bones.

If your T-score is very low or if you have already broken a bone, your doctor may prescribe medication. Common options include bisphosphonates (such as alendronate or risedronate), which slow bone loss, or other drugs that work differently. These medications reduce fracture risk but do not cure osteoporosis — you typically take them long-term.

Lifestyle changes that support bone health

Getting enough calcium and vitamin D is foundational. Calcium-rich foods include dairy products, leafy greens, fortified plant-based milks, and canned fish with bones. Vitamin D comes from fatty fish, egg yolks, fortified milk, and sunlight exposure. If you cannot get enough from food, supplements are widely available and inexpensive.

Quitting smoking and limiting alcohol are important — both speed up bone loss. Smoking reduces estrogen levels and interferes with calcium absorption. Heavy drinking (more than two drinks daily for men, one for women) damages bone-forming cells. Regular physical activity, especially weight-bearing and muscle-strengthening exercise, is one of the most effective ways to maintain bone density at any age.

When to see a doctor about bone health

Talk to your doctor if you are a woman over 50 or a man over 70, even if you have no symptoms. If you have risk factors — family history, low calcium intake, sedentary lifestyle, or use of corticosteroids — mention them at your next visit. Your doctor can assess your individual risk and recommend screening if appropriate.

See your doctor right away if you break a bone from a minor fall, notice you are getting shorter, develop a stooped posture, or have sudden back pain. These can be signs of a fracture caused by weak bones. Early detection and treatment can prevent serious fractures and help you maintain independence as you age.

Frequently Asked Questions

Can osteoporosis be reversed?

No, but it can be slowed or stopped. Medications and lifestyle changes reduce bone loss and lower fracture risk. The goal is to maintain the bone density you have and prevent further decline.

Is osteoporosis painful?

Osteoporosis itself does not cause pain — it is often called a silent disease because you feel nothing until a bone breaks. Pain comes from fractures, not from the condition itself.

How often do I need a DEXA scan?

Your doctor will recommend a schedule based on your results and risk factors. Many people are rescanned every one to two years to track changes in bone density and see whether treatment is working.

Can men get osteoporosis?

Yes. About one in four men over 50 will break a bone due to osteoporosis. Men are screened at age 70 or earlier if they have risk factors like low testosterone, corticosteroid use, or family history.

What is the difference between osteoporosis and osteopenia?

Osteopenia is low bone density — a T-score between -1.0 and -2.5. Osteoporosis is more severe, with a T-score of -2.5 or lower. Osteopenia means your bones are weaker than normal but not yet at the level of osteoporosis, though it can progress without treatment.