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Published on: 3/5/2025

Does Low Testosterone Cause Weight Gain?

Low testosterone is linked with weight gain because it can reduce muscle mass and slow metabolism, but many factors also affect body weight.

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Explanation

Testosterone helps build muscle and keeps metabolism running well. When testosterone levels are low, a man might lose some muscle and gain extra fat, especially around the belly. This change in body makeup can lead to weight gain over time. Some studies have shown that men with low testosterone often have more body fat and that treatments to boost testosterone might help improve their weight. However, it's important to remember that many things affect weight, such as diet, exercise habits, and overall health. Low testosterone is just one piece of the puzzle when it comes to weight gain. If you are concerned about your weight or hormone levels, it’s a good idea to talk with your doctor. They can check your testosterone levels and help make a plan that might include lifestyle changes, hormone treatments, or other approaches to help manage your weight.

(References)

  • Kelly DM, Jones TH. Testosterone and obesity. Obes Rev. 2015 Jul;16(7):581-606. doi: 10.1111/obr.12282. Epub 2015 May 15. PMID: 25982085.

  • Fernández-García JC, Barrios-Rodríguez R, Asenjo-Plaza M, et al. Metformin, testosterone, or both in men with obesity and low testosterone: A double-blind, parallel-group, randomized controlled trial. Metabolism journal. 2022;136(155290):1-10. doi:10.1002/oby.23695.

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