Supplement
Pregnenolone
Pregnenolone is a hormone precursor that your body uses to make progesterone, DHEA, and cortisol. Limited studies suggest it may help with memory and cognitive function, though most research has been in older men or people with neurological conditions, not menopausal women. Since it affects your entire hormone system, working with a healthcare provider who understands hormones is essential. If brain fog is your main concern, established approaches like hormone therapy or cognitive behavioral therapy may be more reliable starting points.
30-second summary
Pregnenolone is a hormone precursor that your body uses to make progesterone, DHEA, and cortisol. Limited studies suggest it may help with memory and cognitive function, though most research has been in older men or people with neurological conditions, not menopausal women. Since it affects your entire hormone system, working with a healthcare provider who understands hormones is essential. If brain fog is your main concern, established approaches like hormone therapy or cognitive behavioral therapy may be more reliable starting points.
brain fog — weakmood changes — weak
Overall: Weak evidence
Randomised controlled trials
Small randomized trials show some cognitive benefits, but mostly in older adults or people with specific neurological conditions, not healthy menopausal women.
Very limited observational data exists on pregnenolone supplementation in any population.
No comprehensive meta-analyses exist specifically examining pregnenolone supplementation for menopause symptoms.
Menopause-specific trials
No well-designed studies have specifically examined pregnenolone supplementation for menopausal symptoms in healthy women.
What we do not know
We don't know the optimal dose for menopausal women specifically, as most studies used doses ranging from 5-500mg in different populations. We don't know how pregnenolone interacts with hormone therapy or other medications commonly used during menopause. We don't have long-term safety data for women taking pregnenolone during the menopausal transition. We don't know if pregnenolone actually converts to the hormones women need most during menopause when taken as a supplement. Most studies lasted only a few weeks, so we don't know about sustained benefits or risks.
How it is used
Common dose range
5-50mg daily — start low
Notes on dosing
This is a hormone precursor — treat it with the same respect as other hormonal interventions. Discuss with a doctor before starting.
Get it from food first
Food sources are better absorbed than most supplements and come with co-factors that support the same pathways. If you eat two or three of these consistently, you may not need a supplement at all.
What depletes Pregnenolone
Chronic stress depletes pregnenolone as your body prioritizes cortisol production. Aging naturally reduces pregnenolone synthesis. Certain medications that affect liver function may impact pregnenolone metabolism.
Interactions and cautions
No significant interactions noted at recommended doses.
Rose bottom line
"While pregnenolone is intriguing because it's the starting material for so many hormones we lose during menopause, the evidence for supplementing it specifically for menopausal symptoms is thin. Your body's ability to convert it to what you actually need may not work the way we'd hope. If you're dealing with brain fog or mood changes, there are more established paths forward that your healthcare provider can guide you through."