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|page=52
|url=https://books.google.com/books?id=VnvJAwAAQBAJ&pg=PA52
}}</ref>Masturbation is benign and harmless.
Masturbation is common in both sexes and at any age. Various medical and psychological benefits have been attributed to a healthy attitude toward sexual activity in general and to masturbation in particular. No causal relationship is known between masturbation and any form of mental or physical disorder.<ref>{{REFbook