How To Increase Progesterone Naturally: What Works And What Is Invented

Search this question and you will get seed cycling diagrams, a list of “progesterone-boosting foods”, and something about maca. Almost none of it engages with the one fact that determines whether any of it can possibly work.

Progesterone is made by the corpus luteum, which only exists after ovulation. No ovulation, no corpus luteum, no meaningful progesterone. Nothing you eat contains it, and no food creates a corpus luteum.

So the honest version of “how to increase progesterone naturally” is really two questions: are you ovulating? and if so, is the luteal phase functioning well? Everything useful follows from which of those is your situation. If you are not sure which applies to you, the mechanisms are set out in what low progesterone symptoms actually indicate.

First: confirm whether you are ovulating

Everything downstream depends on this and most women have never checked.

Basal body temperature. The only method that confirms ovulation happened rather than predicting it might. Progesterone raises core temperature, so a sustained rise of around 0.3°C lasting more than ten days confirms a functioning corpus luteum. Take it on waking, before moving, same time daily.

Ovulation predictor kits. Detect the LH surge, which precedes ovulation. Useful for timing, but an LH surge does not guarantee an egg was released — you can surge and fail to ovulate, which is exactly what happens increasingly in perimenopause.

Mid-luteal progesterone. The definitive test, seven days after ovulation. Not “day 21” unless your cycle is exactly 28 days.

Cervical mucus. Free. Fertile-quality mucus — clear, stretchy, egg-white — around mid-cycle indicates rising estrogen and an approaching ovulation.

If you are not ovulating, the sections on stress, energy availability and thyroid below are your entire intervention. If you are ovulating but the luteal phase is short or weak, the whole list applies.

Reduce the cortisol competition

The most important lever, and the one dismissed as vague advice because “manage your stress” sounds like nothing.

The mechanism is specific. Progesterone and cortisol both derive from pregnenolone. Under sustained demand, steroidogenesis prioritises cortisol. This is not a metaphor about being frazzled — it is a substrate allocation problem.

What actually reduces the demand, in order of effect:

Sleep, treated as non-negotiable. Sleep restriction raises cortisol directly. If you are already waking at three, that is a compounding loop rather than a separate complaint.

Reduce training intensity if it is high. Exercise is a cortisol stimulus. Beneficial in moderation; counterproductive as chronic high-intensity load on top of an already-stressed system. Women often respond to hormonal symptoms by training harder, which is the wrong direction.

Morning light and a fixed wake time. These sharpen the cortisol curve so it peaks when it should and falls when it should, rather than staying flat all day. The mechanics are covered in what is actually happening when you feel tired but wired.

Stop under-eating. Restriction is itself a cortisol stressor. Which leads to the next point.

Eat enough, and enough fat

Steroid hormones are synthesised from cholesterol. Prolonged very low fat or very low calorie intake removes the raw material.

More significantly, the hypothalamus monitors energy availability and suppresses the GnRH pulses that drive ovulation when it perceives scarcity. This is functional hypothalamic amenorrhoea at the severe end, and a milder version — luteal phase shortening without periods stopping — at the common end.

The combination that most reliably suppresses ovulation is under-eating plus over-exercising, and it is extremely common in women trying to address hormonal symptoms through discipline. If your cycles shortened after you started a new regime, that is your answer.

This is also the strongest argument against aggressive intermittent fasting for cycling women, discussed in who fasting helps and who it harms.

Check thyroid and prolactin

Both suppress ovulation directly, and both are simple tests that frequently go unordered.

Hypothyroidism disrupts the hormonal cascade driving ovulation. Elevated prolactin suppresses GnRH. Neither responds to dietary change — they need identifying and treating, after which ovulation often resumes on its own.

Ask for TSH, free T4, TPO antibodies, and prolactin if cycles are irregular.

The supplements with actual evidence

Vitex (chaste tree berry). The one with the most credible support. It acts on dopamine receptors in the pituitary, lowering prolactin, which can support luteal function. Trials show benefit for premenstrual symptoms and some luteal-phase measures. Takes around three cycles. It interacts with hormonal contraception, fertility drugs and dopamine-affecting medication, so it is a conversation with your doctor rather than a purchase.

Vitamin B6. Participates in the pathways involved and has some evidence for luteal support and premenstrual symptoms. Doses above 100mg daily long-term risk peripheral neuropathy — more is not better.

Magnesium. Broad support for premenstrual symptoms, involved in steroidogenesis, and very commonly low. Glycinate is well absorbed and does not upset the stomach.

Zinc. Required for follicular development and ovulation. Correcting a deficiency helps; supplementing beyond sufficiency does not, and excess zinc depletes copper.

Vitamin C. A few small studies suggest higher intakes may support luteal progesterone. Weak evidence, low risk.

What does not work

Said plainly, because this is where the money and the disappointment go.

Seed cycling. Pumpkin and flax in the follicular phase, sesame and sunflower in the luteal. No clinical evidence supports the claimed hormonal effect. The seeds are nutritious; the mechanism is invented.

“Progesterone-boosting foods”. No food contains progesterone or triggers its production. Foods can support the general nutritional environment. That is a different claim from the one being made.

Wild yam cream. Contains diosgenin, which can be converted to progesterone in a laboratory. Your body cannot perform that conversion. Any wild yam product with a real effect has had synthetic progesterone added to it.

Over-the-counter progesterone cream. Different problem: it may genuinely contain progesterone, with inconsistent absorption, no dosing control and no monitoring. Unsupervised use of a real hormone is not a natural approach — it is an unmonitored one.

When natural is not the answer

Worth saying in an article with this title.

If you are in perimenopause and your cycles are anovulatory, no lifestyle change restores ovulation — the follicle pool is depleting and that is not a modifiable variable. In that situation micronised progesterone is the intervention that addresses the deficiency directly, and it is frequently not offered until symptoms become severe.

Similarly, if you are trying to conceive with a documented luteal phase defect, that is a fertility conversation with a defined treatment pathway, not a supplement question.

Natural approaches work well where the cause is modifiable — stress, energy availability, thyroid, prolactin. They do not work where the cause is ovarian ageing, and pursuing them for two years instead of getting assessed is a real cost.

Given all of the above, where does a supplement legitimately sit? Narrowly, and on one specific half of the problem. Nothing over the counter contains progesterone or restores ovulation — if either of those is what you need, the honest answer is medical. What is addressable is the cortisol competition for pregnenolone, which is a documented mechanism and the part most women can genuinely influence. MenoRescue is the formula we looked at built around that cortisol–hormone pairing rather than claiming to supply the hormone itself. Use it alongside the sleep, energy and training changes above, not as a way to skip them. Affiliate link; we may earn a commission at no extra cost to you.

The short version

Progesterone comes from the corpus luteum, which only exists after ovulation — so the first question is whether you are ovulating at all, and basal temperature tracking answers it for free. If you are not, the levers are cortisol load, energy availability, thyroid and prolactin, and nothing else. If you are, vitex, B6, magnesium and zinc have some support. Seed cycling, progesterone-boosting foods and wild yam cream do not work, and unsupervised progesterone cream is not a natural approach. And if anovulation is due to ovarian ageing, micronised progesterone is the option that actually addresses it.