Sexually transmitted diseases (STDs) are infections that are passed from one person to another through sexual contact. The causes of STDs are bacteria, parasites, yeast, and viruses. There are more than 20 types of STDs, including. Chlamydia. Genital herpes. Gonorrhea.
Society for Endocrinology. Hormones. Oxytocin is a hormone that acts on organs in the body (including the breast and uterus) and as a chemical messenger in the brain controlling key aspects of the reproductive system including childbirth and lactation, and aspects of human behaviour.
Differences in how we respond to a brain chemicalcalled oxytocin, suggests the latest stress research. Sometimes referred to as the bonding hormone or love hormone, oxytocin makes people (animals, too) care for each other. Sex (and masturbation) will trigger its release, but it alsohas ties to stressful situations.