Research

Hormonal

Testosterone replacement therapy in elderly men increases muscle mass and strength but has unpredictable effects on the prostate, limiting its clinical utility.

For elderly men with clinically diagnosed low testosterone, replacement therapy can improve muscle mass and strength. However, it is not a cure for impotence (often caused by vascular issues) and carries unpredictable prostate risks. It should only be considered after careful evaluation of prostate health and benefits vs. risks.

ModerateQualifiesMEDIUM confidence
The data available point to a positive effect on muscle mass and strength... T replacement therapy in elderly men is limited in its use, however, because of its unpredictable effects on the size of the prostate.
Steven W. J. Lamberts et al. · Science · 1997

Why this rating

Cites studies but notes 'few long-term, placebo-controlled studies' and 'no firm data' on prostate cancer growth.

Source

The Endocrinology of Aging

Steven W. J. Lamberts et al. · Science · 1997

DOI 10.1126/science.278.5337.419

narrative_reviewCited 981×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →