The Many Faces of Oral Micronized Progesterone:
- I sleep like a baby
- My mood is amazing
- I’m not mean anymore
- My periods are on time
- My periods are not heavy anymore
- I’m no longer anemic
- My anxiety is so much better
- My anxiety is so much worse
- I’m bloated
- I’m munchy
- I can’t seem to get going in the morning
- My mood is low
- I feel like I was drugged
Progesterone Sensitivity
Being sensitive or having negative symptoms from oral progesterone is not unheard of. For some women, they just cannot tolerate oral progesterone. And those who are sensitive can have a range of symptoms.
Symptoms of Oral Micronized Progesterone Sensitivity:
- anxiety
- depression
- brain fog
- fatigue
- dizziness
- panic attacks
- Bloating
- Increased appetite
Why? Why do these symptoms occur from oral progesterone?
GABA GABA… GABA Gone Wrong:
When you take progesterone orally, it is absorbed through the digestive tract and travels to the liver (first-pass metabolism). During this first pass through the liver, much of the progesterone is metabolized into other compounds, including the neuroactive metabolite allopregnanolone.
Allopregnanolone:
Allopregnanolone can cross the blood-brain barrier, where it enhances GABA’s effect. Or, more succinctly, it increases the sensitivity of GABA receptors to GABA.
Allopregnanolone doesn't make more GABA; it makes the receptors more responsive.
Ideally, by increasing GABA responsiveness, it can cause relaxation, better sleep, and even improved mood (less irritability).
But in some, that increased GABA sensitivity can cause:
- Too much sedation: groggy the next morning and even throughout the day.
- Low mood: sad, apathetic, not finding joy in what you once found joy in.
- Brain fog from feeling overly sedated.
- Dizziness from the sedation, and some women report feeling woozy or ‘drunk-like.’
But where does the anxiety come from?
- In some women, an increase in GABA sensitivity can be paradoxical and result in panic and anxiety.
- Progesterone is also a precursor in the pathway that can eventually produce cortisol. It is not proven, but in my clinical experience, some, not all, get anxious when taking oral progesterone, and I think it is more than the paradoxical effect of allopregnanolone. I suspect that some could be converting to cortisol.
What About Bloating and Oral Progesterone?
Progesterone can slow gastrointestinal motility by relaxing smooth muscle in the digestive tract. For some women, slower transit can mean more constipation, gas, abdominal fullness, and bloating. In my clinical experience, I have seen women who had regular digestion and bowel movements and still become bloated on progesterone. And it is no fun to feel puffy, bloated, and full. So it is important to address this and find alternatives or remedies for the bloating.
Weight Gain From Oral Progesterone?
Progesterone doesn't directly cause weight gain. But there are some theories.
- It can affect appetite-regulating centers in the hypothalamus, which in turn can increase appetite/cravings.
Coupled with feeling tired, groggy, skipping your walk/gym, and eating a little more can make you gain weight.
Don’t Want To Take Progesterone? Don’t Neglect Your Uterus!
Perhaps you have some or all of these symptoms from taking oral progesterone, but you are taking estradiol HRT, and you have a uterus.
You need progesterone to help protect your uterus.
Estrogen stimulates the uterine endometrial lining to grow. Progesterone helps balance that effect by keeping the lining from becoming too thick
Without adequate progesterone, unopposed estrogen can increase the risk of endometrial hyperplasia and, over time, increase risk of endometrial cancer.
Even if progesterone makes you feel terrible, stopping it is not the answer. The goal is to find the ‘right’ progesterone for you to feel good and protect your uterus.
Can’t Tolerate Oral Progesterone? Now What?
If you have any of these symptoms from oral progesterone, don’t assume progesterone is simply not for you.
There are other options:
- Dose
- Formulation
- Administration
In the full article, let’s go over your options for your progesterone sensitivity.
Continue reading to learn your progesterone options and what may work better for you.
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