Bone density: not shownMixed evidence
In 11 studies of 591 women aged 45 to 78 (12 to 32 weeks, two of them at least a year), Pilates or yoga didn't change bone density significantly against control. A 2025 review of trials in healthy people found no significant effect in 2 pooled trials, and 8 months of Ashtanga yoga in 34 women aged 35 to 50 didn't change bone density. Canada's guideline: yoga's effects on bone density, falls and fractures "are uncertain".
Sources 3, 4, 21, 2
Mind-body exercise with strength trainingMixed evidence
Across 11 trials of mind-body exercise in women around and after the menopause (tai chi, yoga, Pilates, qigong and others), bone density improved a little. Across 74 trials, mind-body exercise did best for bone when combined with strength training. Neither tested yoga on its own.
Sources 22, 23
The 12-minute studyMixed evidence
The "12 poses" study (2016) asked volunteers recruited online to hold 12 poses for 30 seconds each, daily, from a DVD. It had no comparison group: 227 of 741 volunteers were judged compliant, each person's scans before joining were compared with those after, and the main comparison rested on 72 to 83 people, with 18 to 29 per bone site in the best-documented group. The hip result wasn't significant, practice was self-reported, "Some subjects used the electronic scorecard incorrectly", and the authors called for proper randomised trials.
People who sign up for a yoga study and keep it up may differ in other ways, and the paper doesn't describe accounting for bone medicines (our reading of the full text). Its 12 poses include three twisting poses, one of them the revolved triangle. We found no published critique, but the design can't show that yoga raised bone density.
Sources 24, 25
Small studies with no comparison groupMixed evidence
In 30 women with osteoporosis after the menopause, 6 months of yoga poses went with a small change in bone density score (from -2.69 to -2.55), with no comparison group.
Source 26
Yoga loads bone lightlyEmerging evidence
In a lab study of 28 hatha poses, yoga produced low forces through the feet, unlike the moderate impacts the UK consensus recommends for bone. It's one small study.
Sources 18, 1
BalanceEmerging evidence
In 6 trials of 307 people aged 60 and over, yoga improved balance and mobility by a small to moderate amount, and the authors said more research was needed to see whether that prevents falls. In 32 women with osteoporosis, adding 2 minutes of tree pose a day to exercise improved one-leg standing at 6 weeks.
The Royal Osteoporosis Society suggests balance exercise on at least two days a week, and says that in yoga, Pilates, tai chi or dance, "it is best to stand up if you can".
Sources 10, 4, 27, 28
FallsMixed evidence
Yoga hasn't been shown to prevent falls: in a UK trial of chair yoga in 454 people aged 65 and over, falls didn't differ significantly, and in older women yoga's effects on balance, walking and leg strength were inconsistent. Exercise that challenges balance and function cut the rate of falls by about 23% in 108 trials (high certainty), and the world falls guidelines advise it 3 or more times a week.
Sources 11, 29, 30, 12
Fear of fallingEmerging evidence
The world falls guidelines note that "supervised holistic exercise interventions in community settings, such as Pilates or yoga, had the largest effect sizes in reducing concerns about falling".
Source 12
Posture and a curved upper backEmerging evidence
In 118 people aged 60 and over with a curved upper back, an hour of yoga 3 days a week for 24 weeks improved one measure of the curve by 4.4%, but not another measure, physical performance or quality of life. Spine strengthening and posture training reduced the curve by 3 degrees in 99 older adults, and in 50 women, 2 years of back strengthening was followed 8 years later by fractures in 1.6% of spinal bones, against 4.3% without it.
Sources 17, 31, 32
What the guidance says about yogaStrong evidence
UK: "Balance and muscle strength exercise (including activities such as Tai Chi, dance, yoga and Pilates) are recommended at least twice a week to reduce the risk of falls especially in older age", and after a spinal fracture, "Yoga and Pilates and similar exercise programmes should be considered to help with posture and pain". Canada: yoga and Pilates "may improve physical functioning and quality of life in older adults", with uncertain effects on bone density, falls and fractures.
Sources 1, 2