Androstenedione is a type of hormone
that is a direct precursor and metabolite of the hormone testosterone.
Both converts back and forth to each other by action of the
enzyme 17-beta hydroxysteroid dehydrogenase.
Androstenedione is synthesized into testosterone,
it's supplementation likely increases testosterone production
and the androgenic properties associated with testosterone that
are desired by bodybuilders such as increased energy, strength,
muscle development and decreased recovery time from workouts.
German studies have shown up to a 237% increase
in free testosterone levels after a 100 mg dose of androstenedione.
Free testosterone levels may begin rising in as little as 15
minutes after taking androstenedione on an empty stomach.
Here is the conversion process in the production
Enzymes are involved at each step of the process
and may be a limiting factor in this conversions.Androstenedione
is most likely better at converting to testosterone than DHEA
is. For one, DHEA is two steps away from testosterone. This
means that there are more enzymes involved in the process. Androstenedione
is only one step away.
Optimal testosterone levels keep healthy red
blood cells, rapid protein production, and a balanced immune
system. It increased energy, greater sense of overall well-being,
and enhanced recovery and repair after exercise.
In 100 mg doses, Androstenedione does not
appear to have a negative effect on natural production of luteinizing
hormone (LH). This is important because a reduction in luteinizing
hormone would signal that natural testosterone production may
be diminished. It is unknown whether larger doses of androstenedione
will affect luteinizing hormone production.