Dracure

Why Falls Break Bones After 50

A calm, flat-style visual metaphor for bone density loss.

A rug that has sat in the same spot for ten years. A wet patch by the kitchen sink. The misstep is the same at 40 as it is at 75 — what changes is what the floor does to you when you land.

Two different things change with age, and they get talked about as if they were one. Chronic conditions, medications, muscle loss and blood-pressure drops make a fall more likely in the first place. Separately, bone mineral density and bone mass fall, so a trip from standing height that a healthy bone would shrug off can crack one weakened by osteoporosis.

What Makes Balance and Gait Fail With Age

The National Institute on Aging starts its list with the senses. Eyesight, hearing and reflexes may not be as sharp as they were, and even small changes in sight and hearing are linked to a higher risk of falling. That is one reason hearing loss gets treated as a health matter rather than an inconvenience, whether the device comes over the counter or by prescription.

NIA lists diabetes, heart disease, and problems with the thyroid, nerves, feet or blood vessels as things that can affect balance and lead to a fall. Conditions that cause rushed movement to the bathroom, such as incontinence, may also raise the chance of falling.

Cognition belongs on the list too. Older adults with mild cognitive impairment or certain types of dementia are at higher risk of falling, according to NIA.

Blood pressure has a specific role here. Postural hypotension — blood pressure that drops too much when a person gets up from lying down or sitting — is a fall risk factor. So are foot problems that cause pain, and unsafe footwear such as backless shoes or high heels.

Medications matter in two ways. Some cause side effects like dizziness or confusion, and NIA states that the count itself is a factor: the more medications a person takes, the more likely they are to fall. Safety hazards in the home or the wider environment can cause falls as well.

The muscle piece has a name. Sarcopenia comes from the Greek roots sarx, flesh, and penia, loss, and NIA defines it as a decline in muscle mass, strength and function. It is often associated with older adults, but some forms can affect middle-aged people too.

Its effects show up long before any fall does — weakness, fatigue, lower energy levels, and difficulty standing, walking and climbing stairs, in NIA’s description. It is more likely in people with chronic diseases. NIA says it may contribute to a risk of falls, fractures, other serious injuries and premature mortality.

Why Bone Density Changes What a Fall Costs

Osteoporosis is not a balance problem. The National Institute of Arthritis and Musculoskeletal and Skin Diseases describes it as a bone disease that develops when bone mineral density and bone mass decrease, or when the structure and strength of bone changes. The result is a decrease in bone strength, which raises the risk of fractures.

NIAMS calls it a silent disease. There are typically no symptoms until a bone breaks, so a person may not know they have it until that moment.

What changes is the threshold for breaking. Bones affected by osteoporosis may become fragile enough that fractures happen after minor falls — NIAMS gives the example of a fall from standing height that would not normally break a healthy bone. Fractures can also follow normal stresses such as bending, lifting or even coughing.

Fractures can occur in any bone, NIAMS says, but happen most often in the hip, the vertebrae of the spine, and the wrist. Symptoms of a vertebral fracture include severe back pain, loss of height, or spine malformations such as a stooped or hunched posture, called kyphosis.

The timing differs by sex. NIAMS notes that for many women the disease begins to develop a year or two before menopause, and that women have lower peak bone mass and smaller bones than men. Men are still at risk, especially after the age of 70.

Age works on both sides of the ledger: as a person ages, NIAMS says, bone loss happens more quickly and new bone growth is slower. Osteoporosis is the major cause of fractures in postmenopausal women and in older men.

Treating balance and bone as one problem is, I think, the common mistake. Osteoporosis does not make someone fall. It changes what the fall costs.

How Often Adults 65 and Older Report Falling

The CDC’s figures are about a specific group answering a specific question. Over 14 million adults aged 65 and older — one in four — report falling each year. Falls are the leading cause of injury for that age group, and the leading cause of both fatal and nonfatal injuries among older adults.

The injury share is narrower than it first looks. About 37% of those who fell reported an injury that required medical treatment or restricted their activity for at least one day. That percentage is a share of the people who fell, not of all older adults, and it works out to an estimated nine million fall injuries.

Deaths are counted differently again. CDC reports that the age-adjusted fall death rate among adults 65 and older increased by 21% — from 64.7 per 100,000 in 2018 to 78.4 per 100,000 in 2024. Those are age-adjusted death rates, standardized to the 2000 U.S. population using the age groups 65–74, 75–84 and 85 and over.

CDC also notes that while older adult falls are common across all states, there is variability between them.

What a Bone Density Evaluation Involves

Part of it is physical and low-tech. NIAMS describes a doctor’s exam that may include checking for loss of height and weight, changes in posture, balance and gait, and muscle strength — such as the ability to stand up from sitting without using the arms.

The visit also covers history: previous fractures, lifestyle habits including diet, exercise, alcohol use and smoking, current or past conditions and medications that could contribute to low bone mass, family history of osteoporosis, and for women, menstrual history.

Then there is the measurement itself. A doctor may order a test of bone mineral density, or BMD, in a specific area — usually the spine and hip. NIAMS lists four uses for BMD testing: diagnosing osteoporosis, detecting low bone density before osteoporosis develops, helping predict the risk of future fractures, and monitoring how well an ongoing treatment is working.

The common test has an unwieldy name and a simple procedure. Dual-energy x-ray absorptiometry, or DXA, is described by NIAMS as quick, painless and noninvasive. Low levels of x-rays pass through a scanner that moves over the body while the person lies on a cushioned table.

DXA at the hip and spine is generally considered the most reliable way to diagnose osteoporosis and predict fracture risk. A peripheral DXA measures bone density in the wrist and heel and is portable, but NIAMS notes its results may not help doctors predict future fracture risk or monitor the effects of medications.

Results are read against two comparisons: the average bone density of young, healthy people, and the average for others of the same age, sex and race. A quantitative ultrasound of the heel evaluates bone but does not measure BMD — if it indicates bone loss, NIAMS says a DXA test is still needed to diagnose it.

Calcium and Vitamin D Intake From Age 51

NIAMS publishes a chart of recommended daily intakes across the whole lifespan.

Recommended calcium and vitamin D intakes, charted by NIAMS (source: NIH Office of Dietary Supplements, November 2018)

Life-stage group Calcium mg/day Vitamin D (IU/day)
Infants 0 to 6 months 200 400
Infants 6 to 12 months 260 400
1 to 3 years old 700 600
4 to 8 years old 1,000 600
9 to 13 years old 1,300 600
14 to 18 years old 1,300 600
19 to 30 years old 1,000 600
31 to 50 years old 1,000 600
51- to 70-year-old males 1,000 600
51- to 70-year-old females 1,200 600
>70 years old 1,200 800
14 to 18 years old, pregnant/lactating 1,300 600
19 to 50 years old, pregnant/lactating 1,000 600

Three rows cover the second half of life. From 51 to 70, the chart splits by sex — 1,000 mg of calcium a day for males and 1,200 mg for females, with 600 IU of vitamin D for both. Past 70 the split closes: 1,200 mg of calcium and 800 IU of vitamin D.

The two nutrients are linked mechanically. Vitamin D is necessary for the absorption of calcium from the intestine, NIAMS explains, and it is made in the skin after exposure to sunlight. A few foods naturally contain enough of it — fatty fish, fish oils, egg yolks and liver — while fortified foods such as milk and cereals are a major source.

Calcium runs on supply and demand. If the body does not take in enough, NIAMS says, it takes calcium from the bones, which can leave them weak and thin.

What These Numbers Do and Do Not Say

Each CDC figure counts one thing. One in four, or over 14 million, is how many adults 65 and older report falling in a year. The 37% is a share of the people who fell who reported an injury needing medical treatment or restricting activity for a day or more.

The death figures are a third thing again. 64.7 and 78.4 per 100,000 are age-adjusted fall death rates for adults 65 and older in 2018 and 2024, and the 21% is the increase in that death rate. It is a statement about deaths, not about how often people are falling.

What none of these numbers do is tell any one person how strong their bones are. That comes from a measurement, read by a doctor against a person’s own history — and the questions of whether to have that measurement, and what to make of the result, belong to a qualified clinician, not to a chart.

The two halves of this stay separate, which is oddly useful. One set of ideas is about the fall. The other is about the landing.

This article is general information, not professional advice. For decisions about your money or health, consult a qualified professional.

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