Oestradiol 17-heptanoate is a sex hormone that is present
in both males and females, and is the most important form
of estrogen in humans. In women, it plays a key role in
the development and functioning of the reproductive
system, as well as in the growth of certain bones. It
also governs the distribution of body fat in women and is
the main hormone responsible for the fact that women are
shorter than men, on average. Both the ovaries and the
adrenal glands produce it.