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Body Composition Changes with Age

Muscle, fat, bone, and water percentages by decade

Body composition shifts significantly across the lifespan. Muscle mass peaks in your 30s and gradually declines (sarcopenia), while body fat tends to increase. Understanding these changes helps set realistic fitness goals and emphasizes the importance of resistance training.

22 views Published January 12, 2026 Updated about 1 month ago
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// DATA SOURCES

Journal of Gerontology - Age-Related Changes in Body Composition

Longitudinal study of body composition changes with aging

Nature Reviews - Sarcopenia and Aging

Mechanisms and interventions for age-related muscle loss

Disclaimer: This visualization is for educational and informational purposes only. Data presented here is based on research studies and should not be used as a substitute for professional medical advice. Always consult with a qualified healthcare provider before making health decisions.