A
precursor substance refers to something that comes before or leads to the creation or development of something else. It is like a starting point or an ingredient that is used to make something.
Full definition
The successful approach may involve careful, timed delivery of
natural precursor substances like pregnenalone or DHEA that support your body's own ability to produce hormones.
Some bodybuilders use drugs such as anabolic steroids and
precursor substances such as prohormones to increase muscle hypertrophy.
It is referred to as
a precursor substance or base for hormone production.
Researchers now suggest agree that DHEA is
a precursor substance produced for the correct functioning of natural steroid hormones found in the body.