Intrinsa works by releasing the hormone testosterone through the skin into the bloodstream.

In men, the hormone testosterone protects against bone loss.

This enzyme reduces the 4,5 double-bond of the hormone testosterone.

Prostate cancer needs the male hormone testosterone to grow.

Men are also at risk if they have low levels of the hormone testosterone.

On the other hand, the male hormone testosterone may reduce airway muscle activity and increase the risk of apnea in men.

The hormone testosterone doesn't always have the best reputation.

Most types of prostate cancer need the male hormone testosterone to grow and spread.

The testicles make the hormone testosterone, which spreads around the body.

Clostebol is the 4-chloro derivative of the natural hormone testosterone.