It’s not osteoporosis; it’s another condition, affecting 40% of adults worldwide, more common in older adults and postmenopausal women.
This condition is also a high risk factor for bone fractures.
It’s osteopenia. One reason osteopenia receives less attention than osteoporosis is that it usually causes no noticeable symptoms such as a hunched back or loss of height.
Bone loss develops gradually and silently. Most people don’t realize they have the condition until they break a bone or undergo a bone density scan because of age, menopause, or other risk factors.
As a result, many cases remain undiagnosed for years.
How Bone Density Changes Over Time
Bones may seem solid and unchanging, but they are constantly being rebuilt.
Throughout life, the body removes old bone tissue and replaces it with new bone in a process known as remodeling.
During young adulthood, bone breakdown and bone formation generally remain in balance.
Bone mass typically reaches its highest level sometime between the mid-20s and early 30s.
After that point, bone loss slowly begins to outpace new bone formation — though lifting weights will dramatically slow down the rate of this outpacing.
Over many years, this gradual shift can reduce overall bone density.
Major Risk Factors for Bone Loss
Growing older is the biggest risk factor for osteopenia.
Estrogen helps protect bone tissue, and falling estrogen levels can accelerate bone breakdown. Thus, menopause is another risk factor.
About half of women over 50 will experience a broken bone at some point.
Smoking, excessive alcohol use, lack of physical activity (namely, weight bearing exercise such as resistance workouts or wall climbing), and poor nutrition can all contribute to weaker bones over time.
The Role of Diet and Health Conditions
Calcium and vitamin D are especially important for maintaining healthy bones.
Calcium provides the building blocks for bone tissue, while vitamin D helps the body absorb and use calcium effectively.
People who consume too little of either nutrient may face a higher risk of bone loss.
Certain medical conditions can also increase risk. Disorders that interfere with nutrient absorption, such as Crohn’s disease and celiac disease, may negatively affect bone health.
Long-term use of steroid medications is another well-known contributor to reduced bone density.
How Osteopenia Is Diagnosed
Doctors typically diagnose osteopenia using a dual-energy X-ray absorptiometry scan, commonly known as a DXA or DEXA scan.
This low-dose imaging test measures bone mineral density and compares it with that of a healthy young adult.
Results are reported as a T-score. A score between minus 1.0 and minus 2.5 indicates osteopenia. Scores below minus 2.5 generally meet the criteria for osteoporosis.
Preventing Further Bone Loss
Treatment for osteopenia usually focuses on preventing the condition from worsening and lowering the risk of fractures.
Lifestyle changes are often the first line of defense.
If you smoke, quit. If you drink, stop, or at least, limit it to one small drink per day.
If you’re overweight, make efforts to get into a normal weight range.
And start lifting weights — no matter how old you are, no matter how “weak” you feel. Strength training absolutely strengthens bones.
In addition to classic weightlifting, you can also power walk, jog and hike hills.
Or, you can take aerobics classes at a gym or rec center. Martial arts classes are another great option.
Dairy products, leafy green vegetables, and fortified foods can help people meet their calcium needs. Vitamin D may come from food, supplements, and sunlight exposure.
Because vitamin D deficiency is relatively common, healthcare providers often recommend supplementation for certain individuals.
When Medication May Be Needed
Not everyone diagnosed with osteopenia requires prescription treatment.
Instead, doctors often assess a person’s overall fracture risk using specialized tools that consider factors such as age, bone density, medication use, and medical history.
People with a high risk of fracture or a history of fragility fractures may benefit from medications that slow bone breakdown and help preserve bone density.
These drugs are more commonly used for osteoporosis but may also be appropriate in selected cases of osteopenia.
A Warning Sign, Not a Life Sentence
Osteopenia is often described as a precursor to osteoporosis, but progression is not guaranteed.
For many people, the condition serves as an early warning sign that allows time for intervention.
In some cases, bone density may even improve.
Healthy bones are influenced by decades of choices and life events.
Because bone loss often develops gradually, prevention works best when viewed as a long-term commitment rather than a short-term goal.
Maintaining healthy habits throughout adulthood remains one of the most effective ways to preserve bone density and reduce the risk of fractures later in life.
