The Mission of every Infectious Awareables tie is to generate interest, discussion - even excitement - about serious public health issues which affect us all. Believing that humor can be a powerful educational tool, Infectious Awareables neckties take an atypical, slightly irreverent approach to some very serious subjects. A portion of the proceeds from each tie is donated to organizations that are dedicated to research, education or treatment of disease. You can do your part to help educate people about these matters by getting your tie Today.

Testosterone:

Testosterone is necessary in the fetus for the development of male external genitalia; increased levels of testosterone at puberty are responsible for further growth of male genitalia and for the development and maintenance of male secondary sex characteristics such as facial hair and voice changes. Testosterone also stimulates protein synthesis and accounts for the greater muscular development of the male.