Mood
    Strong Evidence

    Stress & Anxiety Reduction

    Calms the nervous system, regulates stress response, and supports GABA function to reduce anxiety and promote relaxation.

    TL;DR

    Exercise, sleep and CBT beat every anxiety supplement on the market. Ashwagandha has the strongest supplement data, and it is still modest.

    Why It Matters

    Chronic stress and anxiety involve sustained HPA axis activation, heightened amygdala reactivity and reduced prefrontal regulation, with downstream effects on blood pressure, glycaemic control, sleep and immune function. Cognitive behavioural therapy has the strongest evidence of any intervention, and exercise has effect sizes competitive with medication for mild to moderate anxiety. Caffeine and alcohol are the two most common self-inflicted amplifiers. Anxiety with panic, functional impairment or suicidal thoughts requires professional care, not supplement optimisation.

    How to Measure

    Track with GAD-7 (score 5/10/15 marks mild/moderate/severe) or the State-Trait Anxiety Inventory, repeated every 2-4 weeks. Baseline labs worth checking: TSH, ferritin, 25-OH vitamin D, and B12.

    Biomarkers

    GAD-7 score
    Perceived Stress Scale
    Salivary or hair cortisol
    Heart rate variability
    Resting heart rate and blood pressure
    TSH
    25(OH)D

    Optimization Protocol

    1) Exercise most days, with aerobic activity showing anxiety effect sizes comparable to first-line treatments. 2) Protect sleep, since deprivation directly amplifies amygdala reactivity to threat. 3) Cut caffeine, especially after midday, as it reproduces the physical symptoms of anxiety. 4) Reduce alcohol, which lowers anxiety acutely and raises it substantially over the following day. 5) Use cognitive behavioural techniques, the best-evidenced psychological intervention. 6) Practise slow diaphragmatic breathing at around six breaths per minute to increase vagal tone. 7) Get regular daylight and outdoor time, both linked with lower stress reactivity. 8) Maintain social connection, one of the strongest buffers against chronic stress.

    Lifestyle Levers

    • Regular aerobic exercise
    • Sleep protection
    • Caffeine reduction
    • Alcohol moderation
    • CBT techniques
    • Slow breathing practice
    • Daylight and nature exposure
    • Social connection

    Supporting Supplements

    Supporting Research

    Frequently Asked Questions

    Typical Timeframe

    Exercise and caffeine changes help within 1-2 weeks. Adaptogens need 6-8 weeks.

    Research Summary

    Studies11
    Supplements6
    Evidence
    Strong Evidence

    My Notes

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