Hormonal

    Pregnenolone Support

    Master hormone precursor for balanced hormone production.

    TL;DR

    Pregnenolone is the upstream precursor to all steroid hormones, and that is exactly why supplementing it is unpredictable. Human evidence is thin, effects on downstream hormones are uncontrolled, and it is banned in several sporting contexts.

    Why It Matters

    Pregnenolone is synthesised from cholesterol in mitochondria and sits at the head of the steroidogenic cascade feeding progesterone, DHEA, cortisol, testosterone and oestrogen. It is also a neurosteroid modulating GABA-A and NMDA receptors. Supplementing an upstream precursor does not let you choose which downstream hormone rises, so effects vary between individuals and are not measurable without testing. Anyone with a hormone-sensitive cancer history should avoid it entirely.

    How to Measure

    Biomarkers

    Pregnenolone (serum)
    DHEA-S
    Total and free testosterone
    Oestradiol
    Morning cortisol
    Progesterone

    Optimization Protocol

    1) Establish whether there is an actual problem — measure DHEA-S, testosterone, oestradiol and morning cortisol before considering precursor supplementation. 2) Address the reversible drivers of low steroidogenesis: chronic energy deficiency, poor sleep, excess alcohol, untreated sleep apnoea and high training load. 3) Ensure adequate cholesterol intake and body fat; very low-fat diets and severe restriction suppress steroid production. 4) Vitamin D, magnesium and zinc sufficiency support normal hormone synthesis. 5) If pregnenolone is used at all, use it under medical supervision with before-and-after hormone testing, at low doses, and for a defined trial period. 6) Avoid entirely in pregnancy, hormone-sensitive cancers and in tested athletes.

    Lifestyle Levers

    • Adequate energy and dietary fat intake
    • Sleep sufficiency
    • Alcohol reduction
    • Managing training load
    • Stress reduction
    • Correcting vitamin D, zinc and magnesium status

    Supporting Supplements

    Supporting Research

    Frequently Asked Questions

    Typical Timeframe

    Hormone shifts are detectable within 4-8 weeks of supplementation; lifestyle-driven recovery of steroidogenesis takes 3-6 months.

    Research Summary

    Studies4
    Supplements4
    Evidence

    My Notes

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    This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.