Doctors Debunk Myth: Does Frequent Masturbation Really Shrink Male Genitals?
Medical experts debunk the myth that masturbation shrinks male genitals, clarifying that apparent size reduction is temporary and caused by fatigue, not tissue damage. Doctors warn that smoking, prolonged sitting, and poor sleep pose far gr
Doctors Debunk Myth: Does Frequent Masturbation Really Shrink Male Genitals? Four Risky Behaviors Many People Do Often
Compiled by Sanook Online News Team May 7, 2025
Based on foreign media reports, many men believe that masturbation may diminish sexual performance or cause genital tissue to wear down and shrink. However, medical experts confirm that certain behaviors actually pose greater risks to sexual health than masturbation itself.
Debunking the Myth: Masturbation Does Not Shrink Genitals
According to anatomical principles, male genitals consist of cavernous tissue—sponge-like tissue filled with blood vessels. Dr. Hsu Lan-fang from Taiwan explains that this tissue is not a rigid material that can "wear away" from use.
When some men notice their genitals appear smaller after sexual activity or frequent masturbation, it's actually due to temporary erectile dysfunction caused by physical fatigue or overexertion, which prevents blood from completely filling the cavernous tissue. This results in reduced size during erection but is only temporary, not permanent tissue shrinkage.
Conversely, lack of sexual stimulation or sexual activity for more than six months may cause the smooth muscle in the cavernous tissue to atrophy and shrink. Therefore, appropriate sexual activity helps maintain tissue elasticity.
Dr. Han Liwei, head of the urology department at Zhongshan Central Hospital in Liaoning Province, China, further explains that genuine genital shrinkage typically results from chronic blood deficiency, tissue damage, or structural injury caused by disease or unhealthy lifestyle habits, rather than masturbation frequency.
Doctors Warn of Four Behaviors More Harmful Than Masturbation
1. Long-term Smoking Doctors identify smoking as a major enemy of male sexual health. Nicotine and toxic smoke chemicals cause blood vessels to constrict, particularly the small vessels supplying the cavernous tissue. When blood circulation continuously decreases, erectile tissue receives insufficient oxygen and nutrients, gradually losing elasticity and developing fibrosis, resulting in incomplete erections and apparent size reduction that may be difficult to reverse.
2. Prolonged Sitting and Physical Inactivity A modern epidemic, especially for office workers sitting 8-10 hours daily, this behavior is considered a "silent threat" to sexual health. Prolonged sitting creates pressure on the perineal area, impairing blood circulation. Additionally, lack of exercise reduces testosterone levels, a hormone crucial for muscle mass, sexual desire, and penile erection. Low testosterone can diminish sexual performance and in some cases affect genital size.
3. Late Sleep and Insufficient Rest Sleep not only restores the body but is also when the body produces male hormones, particularly during deep sleep. Regularly going to bed late or sleeping too little disrupts testosterone production, lowering hormone levels and causing incomplete erectile function, increasing the risk of erectile dysfunction.
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