What Is Osteopenia, and Can You Reverse It? A Plain UK Guide

Osteopenia means your bone density, measured on a DEXA scan, is below the average for a healthy young adult but not low enough to be called osteoporosis: a T-score between -1.0 and -2.5. It is a band on a measurement, not a disease, and most people in that band never need an osteoporosis medicine. Density can rise by a few per cent with the right exercise, it can be held steady with the basics, and it will not return to what it was at 30. The number that matters more than the T-score is your overall chance of breaking a bone, your FRAX score.^{1, 4}

• What it is: a T-score between -1.0 and -2.5; below -2.5 is osteoporosis; 44% of adults over 50 are in the band
• Can it reverse: modestly, with loading exercise; it stops falling with calcium, vitamin D, protein and not smoking
• Supplements and medicines: supplements fill a gap in the diet; medicines are a GP decision based on FRAX, not the T-score alone

What is osteopenia?

Osteopenia is the name the World Health Organization gave in 1994 to the band of bone density between normal and osteoporosis on a DEXA scan of the hip or spine.¹ Bone density falls in everyone from the mid-30s, faster in women across the menopause, so the band is crowded: 44% of American adults over 50 are in it, against 10% with osteoporosis.² The Royal Osteoporosis Society puts it plainly: low bone density is normal, it is one risk factor for a broken bone among several, and most people with osteopenia do not need an osteoporosis medicine. It has no symptoms; aches are not a sign of it, and a low calcium intake is just as silent (what are the signs of low calcium).

What is the T-score that indicates osteopenia and osteoporosis?

Your report shows one for the spine and one for the hip; the lower counts.⁴

Why did I have a scan, and is osteopenia serious?

The NHS does not screen everyone at 50. A DEXA scan is offered when something raises your fracture risk: a fracture after a minor fall over 50, a parent with a hip fracture, an early menopause, a long course of steroid tablets, or a condition such as coeliac disease or an overactive thyroid; FRAX usually comes first and the scan refines it.^{3, 4} On its own osteopenia is not serious: age, a previous fracture, steroids and how often you fall count as much as the T-score or more, so the same -1.8 means little at 52 and rather more at 78 after a wrist fracture.⁴ The Royal Osteoporosis Society's osteopenia pages and nurse helpline are the place to read next.

Can you reverse osteopenia?

"Reverse" can mean three things. If it means raising the number: modestly, yes. In the LIFTMOR trial, 101 postmenopausal women with low bone mass did 30 minutes of supervised heavy resistance and impact training twice a week for eight months; spine density rose 2.9% while the comparison group doing gentle home exercise lost 1.2%, and hip density held instead of falling.⁵ If it means stopping the decline, that is what calcium and vitamin D sufficiency, enough protein and not smoking do: they stop a shortfall taking density away. If it means the bone of a 30-year-old, no.

What is the best thing to do for osteopenia?

Exercise is the lever; the rest stops the lever slipping. The NHS advice is weight-bearing activity most days and muscle-strengthening on two or more days a week; the trials add that the strengthening must be progressive and that impact, such as hopping or skipping, adds something walking does not.^{5, 6}

• Calcium, 700 mg a day, from food where you can. That is the UK reference intake, not the 1,200 mg American figure. Food and supplements lift density by the same 1 to 2% in the first year and then plateau, so the aim is to meet 700 mg, not exceed it; foods high in calcium shows what that looks like, and do you need a calcium supplement covers the gap.¹⁰
• Vitamin D, 10 micrograms a day in autumn and winter, year-round if you are rarely outdoors or have darker skin, never above 100 micrograms; in adults who are not deficient, extra vitamin D does not reduce fractures, so the aim is sufficiency.^{7, 8}
• Protein. Higher intakes are good for bone, not bad: UK guidance asks for adequate protein, and reviews of higher intakes have found slightly higher spine density and no harm.⁴
• Smoking, alcohol, falls. Smoking and drinking above the 14-unit guideline are FRAX inputs; most fractures follow a fall, so balance and footwear matter as much as the scan.^{4, 6}

What do the trials show for supplements and osteopenia?

Vitamin D alone did not reduce fractures in 25,871 American adults over five years or in an 81-trial analysis of 53,537 people.⁸ Vitamin D with calcium did reduce hip fractures by about 16% in the Cochrane review: one fewer per 1,000 older adults a year.⁹ Vitamin K2 is mixed: the latest systematic review found no evidence it changes bone density or spinal fractures and only uncertain evidence on other fractures; the authorised UK wording is that vitamin K contributes to the maintenance of normal bones.¹¹ Collagen peptides have one adequately sized trial: 131 postmenopausal women took 5 g a day for a year and gained spine and hip density while the placebo group lost it; which collagen is best for bones reads it as one trial, not a settled result.¹² Where the gap is calcium, a supplement is a top-up towards 700 mg rather than a full day's intake, and calcium is needed for the maintenance of normal bones and teeth. Where the gap is vitamin D, keep the total from every product within the 100 microgram daily limit; vitamin D and vitamin K each contribute to the maintenance of normal bones. Can you rebuild bone density sets out the numbers in full.

When are medicines discussed, and how often should I be rescanned?

A medicine is discussed when your FRAX result crosses the threshold for your age or you have already had a fragility fracture, not because a T-score sits in the osteopenia band; if that applies, your GP will discuss the options.^{4, 6} How often to rescan is also a GP question. If your scan came in the years around the menopause, HRT belongs in the same conversation, since oestrogen slows the bone loss of the transition; which menopause supplements have evidence covers where supplements fit beside it. Joint aches at the same stage are a different matter: menopause joint pain: what actually helps.

What to avoid if you have osteopenia (and the food myths)

There is no evidence-based list of "seven worst foods for osteopenia". The two dietary things that harm bone are drinking well above the alcohol guideline and a diet very low in calcium. Salt and fizzy drinks are the usual suspects, and neither has been shown to lower bone density at ordinary intakes; where cola has been linked to weaker bone, the likeliest reason is that it takes the place of milk. Bananas, eggs, tea and coffee are not bad for bones.

Frequently asked questions

Can osteopenia go back to normal?

Sometimes, if the score is near -1.0 and you add progressive resistance and impact training for a year or more; LIFTMOR's 2.9% at the spine is the realistic size of the change.⁵ Near -2.4 the aim is to hold it.

What is the number one vitamin to rebuild bone density?

There is not one. In people who are not deficient, more vitamin D does nothing for bone; loading exercise is the only thing shown to raise density in healthy women.^{5, 8}

Does B12 increase bone density?

No. In a two-year trial of 1,111 older people, vitamin B12 with folic acid made no difference to spine or hip density against placebo.¹³

What weight-bearing exercises are recommended for osteopenia?

Brisk walking, stairs, dancing and jogging, plus progressive strength work, supervised at first, and short bursts of impact such as skipping.^{5, 6} Walking alone maintains rather than builds. The Wellgard joint health guide covers the joints side of staying active.

What drink is good for bones?

Milk and calcium-fortified plant milks: a 200 ml glass gives about 240 mg of calcium, a third of the day's 700 mg. No drink builds bone; exercise does that.

Sources

1. Kanis JA, et al. The diagnosis of osteoporosis. Journal of Bone and Mineral Research, 1994. PubMed 7976495.
2. Wright NC, et al. The recent prevalence of osteoporosis and low bone mass in the United States. Journal of Bone and Mineral Research, 2014. PubMed 24771492.
3. NHS. DEXA (DXA) scan. nhs.uk/tests-and-treatments/dexa-scan.
4. Gregson CL, et al. UK clinical guideline for the prevention and treatment of osteoporosis. Archives of Osteoporosis, 2022. PubMed 35378630.
5. Watson SL, et al. High-intensity resistance and impact training improves bone mineral density and physical function in postmenopausal women with osteopenia and osteoporosis: the LIFTMOR trial. Journal of Bone and Mineral Research, 2018. PubMed 28975661.
6. NHS. Osteoporosis: prevention. nhs.uk/conditions/osteoporosis/prevention.
7. NHS. Vitamin D. nhs.uk/conditions/vitamins-and-minerals/vitamin-d.
8. LeBoff MS, et al. Supplemental vitamin D and incident fractures in midlife and older adults. New England Journal of Medicine, 2022. PubMed 35939577; Bolland MJ, et al. Effects of vitamin D supplementation on musculoskeletal health: systematic review, meta-analysis and trial sequential analysis. Lancet Diabetes and Endocrinology, 2018. PubMed 30293909.
9. Avenell A, et al. Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men. Cochrane Database of Systematic Reviews, 2014. PubMed 24729336.
10. Tai V, et al. Calcium intake and bone mineral density: systematic review and meta-analysis. BMJ, 2015. PubMed 26420598.
11. Mott A, et al. Effect of vitamin K on bone mineral density and fractures in adults: an updated systematic review and meta-analysis. Osteoporosis International, 2019. PubMed 31076817.
12. König D, et al. Specific collagen peptides improve bone mineral density and bone markers in postmenopausal women: a randomized controlled study. Nutrients, 2018. PubMed 29337906.
13. Enneman AW, et al. Effect of vitamin B12 and folic acid supplementation on bone mineral density in older people: B-PROOF, a randomized controlled trial. Calcified Tissue International, 2015. PubMed 25712255.

A bone-density result is a conversation with your GP, not a supplement decision. This article is general information, not medical advice; if you have had a fracture, have bone pain, or take steroids or a medicine that affects bone, speak to your GP.