At a glance
- Progesterone is made mainly by the corpus luteum after ovulation, then falls fast in the days before your period.
- That fall, not low progesterone on its own, is what tends to line up with PMS and PMDD symptoms.
- PMDD comes from an altered response to progesterone's normal swings, not from abnormal progesterone levels.
- Progesterone breaks down into allopregnanolone, a brain chemical tied to calm and anxiety.
- Guidelines for PMDD point to SSRIs, certain contraceptives, or CBT, decided with a doctor, not progesterone itself.
What is progesterone?
Progesterone is a steroid hormone your ovaries make in large amounts after you ovulate. The ruptured follicle becomes the corpus luteum, a temporary gland that produces progesterone for about two weeks unless you get pregnant.
Progesterone does a few specific jobs:
- Thickens and maintains the lining of your uterus for a possible pregnancy
- Signals your body to raise its temperature slightly after ovulation
- Breaks down into allopregnanolone, a brain chemical that calms anxiety
If there's no pregnancy, the corpus luteum breaks down, progesterone falls, and that fall triggers your period. Progesterone also has a direct effect on mood, through that brain pathway, not only on the uterus lining.
You can see the full hormone timeline in menstrual cycle hormones, phase by phase.
How does progesterone relate to PMS and PMDD?
Progesterone and estrogen both rise in the luteal phase after ovulation, then drop sharply in the one to two weeks before your period starts. That drop is one of the main triggers for PMS.
| Phase | Progesterone | What's happening |
|---|---|---|
| Follicular (after period) | Low | Ovaries aren't making much yet |
| Luteal (after ovulation) | Rises, peaks midway | Corpus luteum is active |
| Premenstrual (last days) | Falls fast | Corpus luteum breaks down if no pregnancy |
For most people, this fall brings mild mood dips and physical symptoms that ease once bleeding starts. For people with PMDD, the same fall produces a much stronger reaction. Research on hormone sensitivity shows PMDD symptoms track an altered response to normal progesterone changes, not abnormal progesterone levels themselves [3].
Read more about PMDD, explained.
What does the research say about progesterone?
Several studies have looked at how progesterone changes affect the brain, not just the body.
- Brain imaging finds that progesterone shifts activity in areas that handle emotion, including the amygdala and prefrontal cortex, though the pattern varies by study and brain region [1]
- In women with PMDD, a drug that blocks progesterone receptors increased activity in brain regions tied to emotional control during a provocation task, alongside improved symptoms in most participants [2]
- A hormone-sensitivity study found women with PMDD process certain progesterone-related steroid metabolites differently from women without PMDD, even when hormone levels were set equal between groups [3]
- In rats prone to anxiety, withdrawing progesterone after a period of exposure increased anxious behavior, especially under chronic stress, a pattern researchers link to PMDD's biology [4]
Progesterone isn't only about mood. One small study found sustained attention was better during the early luteal phase, when progesterone is rising [6].
Why does progesterone matter for treatment or coping?
Because PMDD tracks a reaction to progesterone's normal ups and downs rather than too much or too little of it, treatment usually targets that reaction, not the hormone level itself. Guidelines point to a few options, and a doctor decides what fits:
- SSRIs, which some people take only in the luteal phase, when symptoms start
- Certain hormonal contraceptives, which can flatten the natural progesterone swing
- CBT, which helps with how the mood symptoms show up day to day
None of this helps on a hard night right now. If you want somewhere to put a fight or a wave of anger before you react to it, Niyora is a PMS and PMDD support app. Its Moon feature lets you write what happened, see it from another angle, and draft a reply you can hold onto for 20 minutes.
For more on how these hormones are studied, see PMS and PMDD research, summarised.
Questions people ask
Does low progesterone cause PMDD?+
No. Research on hormone sensitivity shows PMDD comes from an altered response to progesterone's normal rise and fall, not from progesterone being too low or too high [3]. That's why simply adding progesterone doesn't reliably fix PMDD symptoms for most people.
When is progesterone highest in the menstrual cycle?+
Progesterone peaks roughly a week after ovulation, during the mid-luteal phase, then falls fast in the days before your period starts. That fall, not the peak itself, lines up with when PMS and PMDD symptoms are usually at their worst.
What does progesterone do to your mood?+
Progesterone breaks down into allopregnanolone, a brain chemical that normally calms anxiety. When progesterone falls before your period, allopregnanolone falls too, and some brains react to that drop with irritability, low mood, or anxiety, especially in the week before bleeding starts.
Can taking progesterone treat PMDD?+
Not reliably. One trial found that higher doses of estradiol plus progesterone brought back more symptoms than lower doses, so adding progesterone isn't a straightforward fix [5]. Guidelines instead point to SSRIs, certain contraceptives, or CBT, decided with a doctor.
Sources
- 1.Emotional and cognitive functional imaging of estrogen and progesterone effects in the female human brain: a systematic review, Psychoneuroendocrinology, 2014
- 2.Brain reactivity during aggressive response in women with premenstrual dysphoric disorder treated with a selective progesterone receptor modulator, Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2021
- 3.The steroid metabolome in women with premenstrual dysphoric disorder during GnRH agonist-induced ovarian suppression: effects of estradiol and progesterone addback, Translational psychiatry, 2017
- 4.Effect of chronic unpredictable stress in female Wistar-Kyoto rats subjected to progesterone withdrawal: Relevance for Premenstrual Dysphoric Disorder neurobiology, Psychoneuroendocrinology, 2023
- 5.Evaluation of different add-back estradiol and progesterone treatments to gonadotropin-releasing hormone agonist treatment in patients with premenstrual dysphoric disorder, American journal of obstetrics and gynecology, 2009
- 6.Sustained attention is favored by progesterone during early luteal phase and visuo-spatial memory by estrogens during ovulatory phase in young women, Psychoneuroendocrinology, 2008