506 citations
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March 2005 in “The Journal of Clinical Endocrinology and Metabolism” Testosterone therapy improves physical function, strength, and body composition in older men with low testosterone levels.
417 citations
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February 2004 in “The Journal of Clinical Endocrinology and Metabolism” Testosterone therapy increases bone density in older men with low testosterone levels.
107 citations
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September 2002 in “Journal of Investigative Dermatology” Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.
77 citations
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November 2007 in “International Journal of Andrology” Testosterone with or without finasteride doesn't improve thinking skills in older men with low testosterone.
53 citations
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April 2014 in “Growth Hormone & IGF Research” IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.