There are many controversies surrounding PMDD, and one of
the biggest is the use of progestins and progesterone to help mitigate the
symptoms. I think someone out there must
be marketing progesterone for PMDD pretty heavily, because of all of the
questions I'm getting on the subject. So
I'm going to back up and start at the very beginning, assuming you know nothing about progesterone and progestins,
like I did when I first started researching this topic.
First of all, we are talking about two different
things. Progesterone and progestins are not the same. Progesterone is produced naturally in your body; progestins are synthesized to mimic what progesterone does for your
body. It's important that you do not
confuse the two, and when reading articles or advertisements or results of clinical
studies on hormones, it's important that you know which one they are talking
about--natural progesterone, plant-based progesterone, or synthetic progestins,
also called progestogens.
Somehow it all
gets lumped into being called "progesterone", and I think this is a
big part of where our confusion as consumers comes from.
So:
Progesterone is
what your body makes naturally
Bio-identical
progesterone - a synthetic progesterone made from plant sources that is biochemically similar to those
produced by the body
Progestins - synthetic progesterone-like chemicals structurally
different from what your body makes
Progestogens -
synthetic progesterone-like chemicals structurally different from what your
body makes
If you read nothing else of this post, please make sure you
learn the above distinctions.
Because of the enormous amount of information on progestins
alone, I will not get to the information on what is termed bio-identical
progesterone today. If that's all you
want to read about, you will have to wait for a different post, but in the
meantime I do encourage you to keep reading, as what follows may answer some of
your questions, and may help to explain why you feel the way you do.
Now, back to the
basics:
Progesterone is a hormone naturally secreted by the ovary in
the second two weeks of a woman's menstrual cycle. Both bio-identical progesterone (synthesized
from plant sources) and progestins (synthesized from chemicals) can also be taken
in pill form, the latter by women taking birth control pills and hormone
replacement therapy pills. Progestins
can also be used to induce a menstrual period in the case of stopped menstrual
periods, or to regulate abnormal bleeding in the case of heavy blood flow
problems. Progesterone is also used in
high doses for women with infertility problems and to prevent miscarriages.
There are several different kinds of progesterone being
marketed today. Today's post is about progestins,
the synthetic progesterone-like chemicals (also called progestogens) which bind
to the body's progesterone receptors and function, for the most part, just like
progesterone. But because they are
chemically different from our own natural progesterone, they have side effects.
Progestins were originally developed because they could be
absorbed into the blood when ingested in pill form--this was before the
development of micronized progesterone capsules.
Progestins are only available via a prescription. You find progestins
in birth control pills, also called oral contraceptives. There are two main types of birth control
pills: combination pills and progestin-only pills. Most pills are available in both a 21-day or
a 28-day pack, with the 28-day pack containing 7 placebos, or inactive pills,
taken on the days you would normally have a menstrual period. Combination pills are the most popular, due
to the well-published side effects of synthesized estrogen-only therapies, and contain
both synthesized estrogen and progestin.
However, all combination pills raise the risk of heart
attacks, stroke, and blood clots. That
risk rises if you are either smoker or over the age of 35. Other factors, such as being obese or having
a family history of heart disease make these blood clots more likely, therefore
the FDA advises women against taking any combination birth control pills if you
have a history of blood clots, heart attack, or stroke.
One type of birth control pills carries a higher risk of
deep vein thrombosis or pulmonary embolism (blood clots that start in a leg
vein and travel to the lungs) than others.
Those are the pills that contain the ingredient drospireone and include Beyaz, Gianvi, Lornay Ocella Safyral,
Yasmin, Yaz, and Zarah. According to a
post in the blog re: Cycling, as of April, 2012, pharmaceutical giant Bayer (makers
of Beyaz, Yasmin, and Yaz) faced 11,300 lawsuits from women who have been seriously injured and family members of women who have died after taking Yaz or Yasmin. In December of 2012 the company
reported they settled the first 3500 cases with a total of $750 million in
payouts. As of this date, the latest
case filed, November 28, 2012, is from a woman in Oklahoma who took Yaz for
only two months, ten years ago, and developed deep vein thrombosis.
That said, the
following side effects, usually severe or sudden, may be caused by blood clots:
Headache or migraine
Loss of or change in speech, coordination, or vision
Numbness or pain in chest, arm, or leg
Unexplained shortness of breath
More common side effects of progestins include:
Changes in vaginal bleeding
Light bleeding or spotting between withdrawal bleeds
Symptoms of blood sugar problems (Dry mouth, frequent
urination, loss of appetite, or unusual thirst)
Mental depression
Nausea
Skin rash
Unexpected or increased flow of breast milk
Abdominal pain or cramping
Breast tenderness
Bloating or swelling of ankles or feet
Blood pressure increase
Dizziness
Headache
Mood changes
Nervousness
Unusual or rapid weight gain
Acne
Brown spots on exposed skin
Hot flashes
Loss or gain of body, facial, or scalp hair
Loss of sexual desire
Trouble sleeping
Certain doses of progestins may also cause a temporary
thinning of your bones, which is a factor in developing osteoporosis, but on
the other hand, it has been found that progestins *may* offer some protection
against osteoporosis in postmenopausal
women. Smoking, drinking alcohol,
and taking or drinking caffeine can also thin your bones, so be aware of the
added stress you may be placing on your bones by taking progestins.
Progestin-only pills
(also called the mini-pill) are most commonly used by nursing mothers, women at
risk for blood clots, and other conditions that prevent them from taking
estrogen.
Combination birth
control pills come in different phases, depending on whether the level of
hormones in the pills changes throughout the month. Monophasic (one phase) pills contain the same
amount of estrogen and progestin in all of the active pills. Two-phase pills change the level of hormones
once during the menstrual cycle. Three-phase
pills change the levels of hormones every seven days during the first three
weeks of pills. Then you have the
inactive pills for the fourth week, which is when you get what is called a
withdrawal bleed. It's not to be
confused with a period. You bleed, but
you don't have a true period. You can't,
because you didn't ovulate. Four-phase
pills change their hormone levels four times per cycle.
Is it safe or healthy
to skip periods? If you aren't
taking oral contraceptives, you need a period after ovulation to shed the
lining that's built up in your uterus in
preparation to receive a fertilized egg.
But when you're taking birth control pills, they suppress ovulation, so
no eggs are released, and therefore your uterine lining doesn't build up. The reason you bleed is because of the week
of inactive pills in your birth control packet.
And sometimes you might not bleed at all.
I am of the opinion that it's not a good thing to chemically
suppress any natural body functions, but every woman has to decide for herself. More information on this (so that you can
make your own informed decision) can be found at the blog, Sweetening the Pill.
So, in addition to regulating your menstrual cycle by
suppressing ovulation, and treating women with no period (amenorrhea) in an
effort to bring about a period if possible, progestins are used:
To prevent estrogen from thickening the lining of your
uterus
To treat pain related to endometriosis
To help treat cancer of the breast, kidney, or uterus—as
progestins can stop the growth of an estrogen-fed tumor
To help prevent anemia (low iron in blood)
and, in high doses:
To stop heavy menstrual bleeding
To help a pregnancy occur during egg donor or infertility
procedures
and
To help maintain a pregnancy when not enough progesterone is
made by the body to do so.
So both progesterone and progestins are tricky things: High doses can either start or stop menstrual
bleeding, and can be used to help support pregnancy, while low doses can
prevent pregnancy from occurring.
However, there have been some reports that high doses of
progestins during pregnancy may cause birth defects in the sex organs of a male
fetus, and some progestins may cause male-like changes in a female fetus and
female-like changes in a male fetus.
Hormones are powerful things, ladies, so buyer beware.
Before taking progestins, you should also tell your doctor
if you have or have had any medical issues with the following, either through
your family history, or having experienced these issues yourself, as progestins
may make these conditions worse:
Allergies (to medicines, food dyes, preservatives, or
animals)
Asthma
Epilepsy
Heart or circulation problems
Kidney disease
Migraines
Bleeding problems
Blood clots
Breast cancer
Deep vein thrombosis
Heart attack
Liver disease
Pulmonary embolism
Stroke
Blood clots in the veins
Breast lumps or cysts
Diabetes
Memory loss
Vision changes
Note: Just as each
woman is individual in her hormonal makeup, each synthetic progestin has a
different side effect profile, due to the various formulations, so it is hard
to pinpoint which progestins will cause which symptoms in which women. I'm just trying to cover all the
possibilities here so that you can see where, if at all, you fit in.
Proposed off-label uses for progestins include treating hot
flashes (interesting, since they can apparently also cause hot flashes) and polycystic ovary syndrome (PCOS). An off-label use is one that has not been
approved by the FDA, but once a drug has been approved by the FDA (in this
case, birth control or hormone replacement therapy) to treat a specific
condition or disorder, doctors may then prescribe it as they see fit. Much marketing is done in the area of off-label
use for many drugs touted as PMDD symptom relievers, and several drug companies
have been reprimanded and fined by the FDA for promoting non-approved uses of
their drugs to treat these symptoms.
We'll talk more about that next time.