Toxic masculinity is a major societal concern. It is said that testosterone from the testes makes men overly aggressive. But the biology of hormones and aggression is not that simple. A symposium ...

Male genitalia, both internal and external, is made of many components. The testes are an important internal component, and the penis is the main external part. The male genital system consists of ...

Your endocrine system controls all of your hormones. It’s made up of many different glands, including the pituitary gland. The pituitary gland (including the anterior pituitary) plays a significant ...

In these fish, puberty was delayed. Cortisol would seem to affect the testes. It directly delays the development of reproductive cells into sperm cells. This slows the growth of the sexual organs and ...

Early in fetal development, a mass of cells known as the bipotential gonad has the possibility of giving rise either to ovaries or testes, reproductive organs that contribute to many of the ...

If you cannot see the Flash Movie playing then you may not have the flash player installed. The latest version of the Flash player can be downloaded free from Macromedia More information and help with ...

Please provide your email address to receive an email when new articles are posted on . A 29-year-old man was seen 2 years ago to transfer his care from pediatric to adult endocrinology. He was ...

IN 1942 Klinefelter et al. 1 described a syndrome of micro-orchidism, azoospermia, hyalinization of seminiferous tubules, elevated urinary follicle-stimulating hormone (FSH) and gynecomastia. Since ...

In the human body, the endocrine system consists of a network of glands and secrete hormones to regulate the functions of the body including growth and metabolism. When glands produce an incorrect ...