The State University of New York has released a new study, published in the Archives of Sexual Behavior, that will make men happier and improve the mental health of women.
The study of 293 females concluded that unprotected sex is good for women's health and reduces depression, reports the Daily Mail.
The researchers said that semen contains cortisol, estrone and oxytocin, which can lift one's mood. Semen also contains a thyrotropin-releasing hormone, melatonin and serotonin, which are all anti-depressants.
Researchers Gallup and Burch, working with psychologist Steven Platek, surveyed 293 college females who answered questions about their sex lives and the Beck Depression Inventory, which is used to measure depression.
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The study concluded that women who had sex and never used condoms had far less depression than women who usually or always used condoms, or women who abstained from sex.