“Separating myths from facts: masturbation does not reduce penis size.” A lot of guys quietly worry: “If I masturbate, will my penis shrink?” The science is very clear: masturbation does not make your penis smaller . It doesn’t stunt growth, shrink length, or reduce girth. Penis size is mostly determined by your genes and puberty hormones , not by how often you touch yourself. “Masturbation doesn’t cause … shrinkage or curvature of your penis .” — Cleveland Clinic. Below, we explain why this myth persists, what actually can change size (temporarily or permanently), how to keep things safe, and when to see a doctor—backed by credible references throughout. What really determines penis size? Genetics + hormones (testosterone/DHT) during puberty drive penile growth. Once puberty finishes, your adult size is basically set. Large population studies show typical ranges and lots of normal variation. A 2023 meta-analysis (75 studies, 55,761 men) found pooled a...
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