My bones are getting fragile: how to plan ahead without panic

Your bones aren't inert stone. They're living tissue, rebuilt around the clock by two crews: one tears down old bone, the other lays new bone in its place. As long as they keep pace, your skeleton stays strong.

At menopause, estrogen drops. Until then it kept the demolition crew in check. Breakdown now outpaces rebuilding, and you lose bone faster, especially in the first five to ten years ^[4][9]. Over that window, you can lose up to 2 to 3% of bone mass a year ^[9].

All of this happens without pain or any warning. Often the first sign is already a fracture: a wrist after a minor fall, a spine that compresses, or the hip ^[4]. Nearly 7 in 10 affected women aren't diagnosed until that first break ^[10].

So your worry is valid. But this silence is also your ally: it leaves time to act, in women at risk, before anything gives way.

A stubborn myth: "I'm menopausal, so I'm entitled to a reimbursed scan." In France, that's not how it works, and the logic makes sense ^[2]. Menopause alone doesn't trigger the prescription: you don't pile scans onto women who don't need them.

What truly justifies the bone density scan (the ostéodensitométrie, a painless measure of bone density) is a specific risk factor. Public health insurance reimburses it notably for ^[2]:

• a fracture from no major trauma (a fall from your own height)
• early menopause (before 40)
• long-term corticosteroid use
• a hip fracture in a parent
• low body weight (low BMI)
• certain conditions (overactive thyroid or parathyroid)

Before prescribing, your doctor weighs your overall profile. They may use FRAX, a calculator combining age, history, weight and smoking to estimate your 10-year fracture risk ^[7][12]. If you aren't offered the scan, it isn't neglect: your profile doesn't justify it yet. And if risk factors do describe you, you have every right to ask.

The scan isn't intimidating. The ostéodensitométrie, or DXA, measures the density of your bones at your lower spine and hip ^[1]. You stay clothed, lying on a table, and a scanning arm passes over you. It's painless, quick (about ten minutes), and the radiation dose is very low.

International guidelines suggest screening every woman from age 65, and earlier if your risk matches that of a 65-year-old ^[3][7]. There's no single cutoff age: your own history decides.

The result is your T-score. It compares your bones to a healthy young woman of 30, at peak bone strength ^[8]. The further the number falls below zero, the thinner your bones. The reference points, set by health authorities ^[8]:

• above -1: normal density
• between -1 and -2.5: osteopenia, a watch zone, not a disease
• at or below -2.5: osteoporosis ^[1][8]

A number alone decides nothing. Two women with the same T-score can get different advice, because the decision combines the T-score, any past fracture and overall risk ^[1][5]. Don't confuse T-score with Z-score either: the latter compares you to women your age. After menopause, the T-score is what counts ^[1].

If you take menopausal hormone therapy (the THM, or MHT), one point can spare you needless scans. MHT restores the estrogen you're missing: it slows bone breakdown and reduces fractures of the spine, hip and elsewhere ^[6][13]. It's now a first-line option for menopause symptoms ^[13].

The upshot: on well-managed MHT, a routine bone density scan usually isn't needed, since the protection is already in place ^[6]. But that protection fades once you stop. How long to stay on MHT, and any check, are discussed with your doctor ^[13].

The scan measures, it doesn't treat. Bone responds to what you ask of it:

• weight-bearing movement (brisk walking, stairs, strength work) builds bone and improves balance, so you fall less ^[8]
• calcium and vitamin D support bone health, without replacing treatment ^[8]

If osteoporosis is diagnosed, effective treatments exist: bisphosphonates first-line, denosumab as an alternative ^[5]. Your doctor chooses the right option with you, based on your T-score and risk factors.