Health glossary · Bone Health

Osteoporosis

os-tee-oh-puh-ROH-sisnoun

A condition in which bones become dangerously thin and fragile, raising the risk of fracture.

Osteoporosis is a disease in which bones lose density and structural strength, making them porous and prone to breaking — sometimes from a minor fall or even routine movement. It affects millions of people, most commonly postmenopausal women, and is often called a "silent" disease because it causes no symptoms until a fracture occurs.

Part of speechnoun
Pronunciationos-tee-oh-puh-ROH-sis
OriginFrom Greek osteon (bone) + poros (pore, passage) + -osis (condition). Literally "porous bone condition." The term was coined in the 19th century and became widely used clinically in the 20th century.

What is osteoporosis?

Osteoporosis means your bones have become significantly thinner and more porous than they should be, weakening them to the point where a fracture can happen from surprisingly little force — a minor trip, a strong hug, or bending to pick something up. The word comes from Greek roots meaning "porous bone," which is exactly what happens: bones develop tiny holes and lose the dense structure that makes them strong.

It's often called a silent disease because you can't feel bone loss as it's happening. Many people don't know they have osteoporosis until they break a bone. The hip, spine, and wrist are the most commonly affected sites, and spinal fractures in particular can cause a gradual loss of height or a forward curve in the upper back.

The condition is diagnosed with a DEXA scan and measured by a T-score below -2.5. Risk increases with age, and women face a higher lifetime risk than men, largely because of the drop in estrogen that occurs with menopause. But osteoporosis is not inevitable — understanding your risk early and taking steps to protect bone density can make a significant difference.

Why it matters

Osteoporosis is one of the most underdiagnosed conditions in women's health, yet its consequences can be life-altering. Hip fractures in older adults are associated with prolonged disability, loss of independence, and — in some cases — serious complications. Spinal fractures can cause chronic pain and change posture permanently.

The encouraging news is that treatment options have expanded considerably. Medications, calcium and vitamin D supplementation, resistance exercise, and fall-prevention strategies all play a role. Early diagnosis through bone density screening is the foundation — knowing your bone density puts you in a position to act, and acting early gives you the best chance of preserving your strength and independence as you age.

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