Can losing weight make your bones stronger?
Effects of a Combined Dietary and Physical Activity Intervention on Bone Density, Lean Mass and Fat Mass in Adults: The GOTO Trial
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Bone density increased in men despite losing muscle mass.
Muscle loss typically correlates with bone loss because muscle pulls on bones to stimulate growth. Here, bones got stronger even as muscle decreased—suggesting fat loss or metabolic changes may directly trigger bone formation.
Practical Takeaways
If you're a man over 60 and want to improve bone density, try a modest 12.5% calorie cut + 12.5% more daily movement (like walking) for 3 months—no gym needed.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Bone density increased in men despite losing muscle mass.
Muscle loss typically correlates with bone loss because muscle pulls on bones to stimulate growth. Here, bones got stronger even as muscle decreased—suggesting fat loss or metabolic changes may directly trigger bone formation.
Practical Takeaways
If you're a man over 60 and want to improve bone density, try a modest 12.5% calorie cut + 12.5% more daily movement (like walking) for 3 months—no gym needed.
Publication
Journal
Journal of Cachexia, Sarcopenia and Muscle
Year
2026
Authors
F. Bogaards, I. Groenendijk, T. Gehrmann, M. Beekman, N. Lakenberg, H. Suchiman, L. D. de Groot, M. Reinders, P. Slagboom
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Claims (6)
When people reduce their calorie intake and do strength training, a greater share of the weight they lose comes from fat rather than muscle.
In healthy men aged middle-aged and older, a combination of moderate calorie reduction and increased physical activity over 13 weeks is linked to small increases in bone density in the spine and whole body, even though some muscle mass is lost and body fat decreases.
In middle-aged and older men, losing body fat and weight during a 13-week lifestyle program is linked to small increases in bone density in the lower spine.
Among middle-aged and older men with poor metabolic and immune health, a 13-week lifestyle change is linked to a larger improvement in bone density in the lower spine than in men who start with better metabolic health.
In middle-aged and older women, a 13-week program of diet and exercise that reduces body weight and fat mass does not change bone density in the spine or whole body, even though men experience similar weight and fat loss, suggesting that bone responses to these lifestyle changes differ between sexes.