Osteoporosis is a silent disease until it is not. You cannot feel your bones thinning. There is no ache, no symptom, no warning. Then one day you trip stepping off a curb, or you lean the wrong way reaching for a glass, or you stumble in the garden, and a bone breaks. For millions of people, that first fracture is also the moment they learn they have a serious bone condition that has been developing for a decade or more.
The good news is that osteoporosis is one of the most preventable and treatable chronic diseases we have. Bones are living tissue. They remodel constantly. Given the right inputs, they can rebuild at essentially any age. This guide explains what is happening underneath the skin, who is at risk, and exactly what to do about it.
What bone actually is
If you imagine a bone as a chunk of chalk, you are going to be wrong about most of this. Bone is a living, metabolically active tissue made of a protein matrix, mostly collagen, hardened by mineral crystals, mostly calcium phosphate. Two kinds of cells run the show. Osteoblasts build new bone. Osteoclasts break it down. Throughout life, these cells carry out a continuous renovation project, tearing down old bone and laying down new bone in its place.
In childhood and adolescence, building outpaces breakdown and bones grow. In the mid to late twenties, people reach their peak bone mass. After about 30, breakdown begins to slightly outpace building, and bone mass gradually declines. The rate of decline is modest until midlife and then accelerates, particularly in women around menopause when estrogen drops. Over decades, this gradual loss leaves bones thinner, more porous, and more fragile.
The difference between osteopenia and osteoporosis
These are two points on the same continuum, separated by a bone density score called a T score. A DEXA scan compares your bone density to the average peak density of a healthy young adult of the same sex. A T score of 0 is average. A T score between minus 1 and minus 2.5 is osteopenia, which means below normal but not yet osteoporosis. A T score below minus 2.5 is osteoporosis.
A DEXA scan that also shows a fracture from a minor trauma, called a fragility fracture, is osteoporosis regardless of the number. Fragility fractures are breaks from falls at standing height or less, or from ordinary activities like lifting a suitcase.
Who gets it and when
Women are at roughly four times higher lifetime risk than men because they start with lower peak bone mass and lose bone quickly around menopause. By age 80, about 70 percent of women meet criteria for osteoporosis or osteopenia. But men are not immune. Roughly one in four men over 50 will have a fragility fracture in their lifetime, and men tend to have worse outcomes after hip fractures than women do.
Major risk factors include family history, early menopause, thin frame, history of smoking, heavy alcohol use, long term steroid use, eating disorders, celiac disease, hyperthyroidism, hyperparathyroidism, rheumatoid arthritis, and certain medications including proton pump inhibitors, SSRIs, aromatase inhibitors, and some diabetes drugs. If any of these apply, screening should start earlier than the standard recommendation of age 65 for women and 70 for men.
The quiet progression
You will not know your bones are thinning unless you test. That is the hard truth. Height loss is a late sign, because it reflects vertebral compression fractures that have already happened. Back pain from a vertebral fracture is often mistaken for a muscle strain. A humerus fracture from catching yourself on a fall is often written off as bad luck. These are signals worth following up with a bone density scan.
Screening guidelines suggest a baseline DEXA at age 65 for women, earlier with risk factors, and age 70 for men. If you are in your 50s with multiple risk factors or a family history of hip fracture, asking your doctor for a scan now is reasonable.
What builds bone
Two things build bone. Mechanical loading and adequate nutrition. Neither alone is enough.
Mechanical loading means forces that deform the bone, which trigger osteoblasts to lay down new tissue. The key insight here is that bone adapts to the loads it actually experiences. Walking is better than sitting, but walking does not substantially build bone in adults because the loads are modest. Running and hopping are better. Lifting heavy weights is better still. And impact activities like jumping, plyometrics, and skipping produce some of the strongest osteogenic signals.
The practical translation for most adults is progressive resistance training two to three times per week that includes squats, deadlifts, rows, and presses, plus a weekly dose of impact work like jumping rope or box jumps if joints allow. For older adults who cannot tolerate heavy impact, lower level jumping, heel drops, and stair climbing still deliver meaningful bone signals.
The LIFTMOR trial, which studied postmenopausal women with low bone density, showed that supervised high intensity resistance and impact training significantly improved spine and hip bone density and function, even in women in their 60s and 70s. This was not gentle yoga or water aerobics. It was heavy squats, deadlifts, overhead presses, and jumping chin ups. The takeaway is that old bone responds to meaningful loads, and the exercise prescription for osteoporosis is not a watered down version of the one for healthy adults.
The nutrition side
Calcium is the raw material of bone mineral, and inadequate intake prevents new bone formation. Adults need about 1000 to 1200 mg per day, from food first. Dairy is the most concentrated source, but leafy greens, fortified plant milks, sardines, canned salmon with bones, tofu made with calcium sulfate, and beans all contribute. Most people do not need a calcium supplement if they eat even moderately dairy inclusive diets. Supplementing above 1200 to 1500 mg total daily intake has not shown clear benefit and may increase cardiovascular and kidney stone risk in some populations.
Vitamin D is essential for calcium absorption. Without adequate vitamin D, you can eat plenty of calcium and not absorb it. Most adults benefit from 1000 to 2000 IU per day, with a target blood level between 30 and 60 ng per mL. Testing rather than guessing is smart here.
Protein is the forgotten pillar. The protein matrix of bone is collagen, which your body builds from amino acids. Older adults on low protein diets have higher fracture rates. Aim for 1.2 to 1.6 grams of protein per kilogram of body weight per day, with at least 30 grams per main meal.
Vitamin K2 helps direct calcium into bone and away from arteries. It is found in fermented foods like natto, aged cheeses, and egg yolks. A supplement of 90 to 180 mcg of K2 as MK-7 is reasonable for people at elevated bone and cardiovascular risk.
Magnesium supports bone formation and vitamin D activation. Many adults run low. Leafy greens, nuts, seeds, whole grains, and dark chocolate contribute. A 200 to 400 mg glycinate or citrate supplement is safe and often helpful.
Medications that treat osteoporosis
When lifestyle alone is not enough, medications meaningfully reduce fracture risk. The main classes are bisphosphonates like alendronate and zoledronic acid, which slow bone breakdown and are usually first line. Denosumab is an injectable antibody that similarly slows breakdown. Teriparatide and abaloparatide are anabolic medications that directly stimulate new bone formation. Romosozumab is a newer antibody that both builds bone and slows breakdown. Hormone therapy, including estrogen and raloxifene, is appropriate for some postmenopausal women.
The decisions around medication involve fracture risk, side effect tolerance, kidney function, and personal preference. A conversation with a clinician who actually understands bone medicine is worth the appointment. The worst strategy is to get a DEXA, get a diagnosis, get a prescription filled, and never take it because you worry about a rare side effect. Untreated osteoporosis leads to fractures. Fractures lead to disability and, too often, death. The risk ratio is heavily in favor of treatment for people who actually have osteoporosis.
Falls are the last mile
A bone only breaks if it gets hit. Falls cause more than 90 percent of hip fractures. Anything that prevents falls prevents fractures. That means balance training like single leg stands, tai chi, and agility work. It means strength training for the muscles that catch a stumble. It means vision checks, medication reviews for drugs that cause dizziness, and home hazard assessments. Throw rugs, dim lighting, and cluttered stairs turn minor stumbles into hospital stays.
Alcohol and smoking
Heavy alcohol intake above two drinks per day directly impairs bone building cells and increases fracture risk. Smoking reduces blood flow to bones, interferes with estrogen, and dramatically raises fracture and post fracture mortality risk. Reducing alcohol and quitting smoking are among the highest leverage moves anyone with bone concerns can make.
What about bone broth and collagen
Collagen peptides at about 10 to 15 grams daily have some early evidence for supporting bone and joint tissue, particularly when paired with vitamin C, which is required for collagen synthesis. Bone broth is nutritious but the actual mineral content per cup is modest and variable. Neither is a substitute for meaningful training and adequate total protein. They can be a pleasant addition.
When bone loss is secondary to something else
Always rule out secondary causes before attributing bone loss to age alone. Celiac disease causes malabsorption of calcium and vitamin D. Hyperparathyroidism pulls calcium out of bones. Vitamin D deficiency is its own entity. Thyrotoxicosis, either endogenous or from excess thyroid medication, speeds up bone turnover. Low testosterone in men and early menopause in women accelerate bone loss. Long term corticosteroid use is one of the most common drug induced causes of osteoporosis. A careful workup including calcium, vitamin D, parathyroid hormone, thyroid panel, and celiac screening catches most of these.
Putting it together
An effective anti osteoporosis plan for a typical adult looks something like this. Two to three progressive resistance training sessions per week, prioritizing squats, deadlifts, rows, and overhead presses. A weekly dose of impact work appropriate to joint status, from hopping to box jumps. Balance training two to three times a week, even just a few minutes of single leg work. Dietary calcium of 1000 to 1200 mg per day from food, supplemented only if intake is insufficient. Vitamin D supplementation to achieve a blood level in the 30 to 60 ng per mL range. Protein at 1.2 to 1.6 grams per kilogram body weight. Moderate to minimal alcohol, no smoking. Annual monitoring of bone density for those at risk, and willingness to use medication when the math supports it.
The bottom line
Osteoporosis is not an inevitable consequence of getting older. It is the result of specific inputs and deficits that can be identified and addressed. The exercises that build bone are the same ones that build strength and independence. The nutrition that protects bone protects almost every other tissue too. And the medications that exist today genuinely reduce fracture risk for people who need them. A life spent strong on your feet, able to lift grandchildren, catch your balance, and walk without fear of falling is not out of reach. Bones are alive. Treat them that way.
