Marc Garnick, M. Two relatively large studies of this question, reported in andyielded good news for sexually active men: high ejaculation frequency seemed to protect against prostate cancer. Ejaculations included sexual intercourse, nocturnal emissions, and masturbation. Study participants also provided comprehensive health and lifestyle data every two years from to
Most men masturbate.
Editor's Note: This story was revised Jan. A new study finds men who are sexually active in their 20s and 30s are more likely to develop prostate cancer — especially if they masturbate frequently. The study also found that frequent sexual activity in a man's 40s appears to have little effect and even small levels of sexual activity in a man's 50s could offer protection from the disease. Most of the differences were attributed to masturbation rather than sexual intercourse.
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