Progesterone and Progestins, What's the
Difference?
by John R.
Lee
I have
clearly outlines the differences between
progesterone and progestins in my books,
but sometimes the Socratic method of
questioning works better to illuminate
an issue.
I suggest that those who still insist
that progestins and progesterone are the
same, or that progesterone is a generic
term that also covers progestins, ponder
the following questions. If progesterone
and progestins are the same:
Why
do fertility doctors always use
progesterone and not progestins?
Why
do progestins cause birth
defects, while progesterone is
essential for a viable and
healthy pregnancy?
Why
don't synthetic progestins show
up in blood and saliva tests of
progesterone levels? In other
words, why doesn't taking
progestin raise progesterone
levels in the body?
Pregnant women are making 300 mg
of progesterone daily in the
last trimester. Why don't they
have higher rates of breast
cancer, as women do who use
progestins?
Why
doesn't natural progesterone
cause the side effects listed
for medroxyprogesterone acetate
(Provera) the most commonly used
synthetic progestin for HRT?
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