Oral sex improves the health and emotional state of women as well. According to experts, the reason is due to the hormones found in the man’s sperm. 293 female volunteers took part in the study. They were questioned about the frequency and type of intercourse, and their emotional and health status was assessed. The researchers found that female volunteers who had a regular sex life that included oral sex had reduced episodes of depression and performed better on cognitive tests. According to experts, the reason is largely due to the content of chemicals in the semen, which lead to an increase in mood and the feeling of love and affection, improve the quality of sleep and act as an antidepressant. Semen, and sperm themselves, contain hormones such as estrone, which increases good mood, and oxytocin, which increases the feeling of attachment, love and happiness. It has also been found that semen contains three hormones that are natural anti-depressants, thyrotropin-releasing hormone, melatonin, which is a sleep-inducing agent, and serotonin, the most well-known neurotransmitter, an anti-depressant. Despite these findings, sex with a condom is recommended in order to prevent the transmission of diseases and infections through sexual contact, experts emphasize. The results and data from the study are published in the Archives of Sexual Behavior.