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the claim

The human body can significantly build muscle while losing body fat

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the human body can significantly build muscle while losing body fat?

Yes. Multiple clinical studies and reviews demonstrate that the human body can undergo body recomposition, successfully building muscle mass while simultaneously losing body fat through appropriate resistance training and nutritional strategies.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

The analysis

The retrieved literature consistently supports the claim that the human body can build muscle while losing body fat (body recomposition). Multiple studies (e.g., papers 0, 1, 2, 7, and 10) document concurrent improvements in lean mass/muscle size and reductions in body fat or fat mass when subjects undergo resistance training, specific therapies, or energy restriction paired with adequate protein intake. There is no evidence refuting this capability.

Evidence for · 5
Effect of whey protein supplementation on body composition changes in women: a systematic review and meta-analysis
2018
A meta-analysis demonstrates that whey protein supplementation improves body composition by increasing lean mass, particularly when combined with energy restriction.
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Bergia, R., Hudson, J. L., & Campbell, W. (2018). Effect of whey protein supplementation on body composition changes in women: a systematic review and meta-analysis. doi.org. https://doi.org/10.1093/nutrit/nuy017

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More for · 4
Intermittent fasting and continuous energy restriction result in similar changes in body composition and muscle strength when combined with a 12 week resistance training program
2022
A 12-week resistance training study combined with energy restriction showed significant increases in lean body mass alongside marked reductions in body weight and fat.
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Keenan, S., Cooke, M., Hassan, E., Chen, W., Sullivan, J., Wu, S., El-ansary, D., Imani, M., & Belski, R. (2022). Intermittent fasting and continuous energy restriction result in similar changes in body composition and muscle strength when combined with a 12 week resistance training program. doi.org. https://doi.org/10.1007/s00394-022-02804-3

Resistance training with blood flow restriction: Impact on the muscle strength and body composition in people living with HIV/AIDS
2020
Resistance training with or without blood flow restriction promoted significant increases in skeletal muscle tissue alongside reductions in body fat.
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Alves, T. C., Santos, A. P., Abdalla, P., Venturini, A. C. R., Angelotti, P. S., Borges, F., Reis, H., Bollela, V., Mota, J., & Machado, D. (2020). Resistance training with blood flow restriction: Impact on the muscle strength and body composition in people living with HIV/AIDS. doi.org. https://doi.org/10.1080/17461391.2020.1757765

Body Recomposition: would it be possible to induce fat loss and muscle hypertrophy at the same time?
2022
An overview of body recomposition confirms that simultaneous fat loss and muscle hypertrophy occur in various populations with proper nutrition and exercise.
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Vecchio, F. B. D. (2022). Body Recomposition: would it be possible to induce fat loss and muscle hypertrophy at the same time?. doi.org. https://doi.org/10.1590/1980-0037.2022v24e86265

Ultrasonographic Measurement After Multilayer Stimulation for Body Fat Reduction and Muscle Strengthening: A Pilot Study.
2025
A clinical trial using combined electrical muscle stimulation, radiofrequency, and vacuum therapy showed significant reductions in abdominal fat alongside increases in muscle thickness.
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KT, B., HW, J., DS, L., J, W., & KH, Y. (2025). Ultrasonographic Measurement After Multilayer Stimulation for Body Fat Reduction and Muscle Strengthening: A Pilot Study.. doi.org. https://doi.org/10.1097/gox.0000000000007175

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Receipt History
first checked06 Aug 2026
judged → SUPPORTED · 8406 Aug 2026
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