metabolism newsletters

NewsletterFIT tracks 11 newsletters that cover metabolism as a primary topic, 6 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Harnessing the Power of Nutrients (84K), Healing The Source (70K) and Parent Fit Club (48K).

Updated Oct 31, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Harnessing the Power of Nutrients84K subscribers

    SubstackMonthly or less · last post 28 days ago

    Likely audience: Health and wellness enthusiasts

  2. 2
    Healing The Source70K subscribers

    SubstackEvery two weeks · last post 22 days ago

    Likely audience: health-conscious individuals

  3. 3
    Parent Fit Club48K subscribers

    SubstackEvery two weeks · last post 14 days ago

    Likely audience: Health-conscious individuals

  4. 4
    Body Type13K subscribers

    SubstackEvery two weeks · last post 25 days ago

    Likely audience: fitness enthusiasts

  5. 5
    Jason's Substack8K subscribers

    SubstackMonthly or less · last post 15 days ago

    Likely audience: fitness enthusiasts

  6. 6
    Nick Rideout's Substack8K subscribers

    SubstackMonthly or less · last post 43 days ago

    Likely audience: health and wellness enthusiasts

  7. 7
    Anni Sirviö1K subscribers

    Substacklast post Apr 22, 2026

    Likely audience: people struggling with weight loss

  8. 8
    Aging.fyi—

    Substacklast post Sep 6, 2021

    Likely audience: non-biologists

  9. 9
    Akkil’s Newsletter—

    Substacklast post Jul 23, 2023

    Likely audience: fitness enthusiasts

  10. 10
    AttractionFlow—

    Substacklast post Jun 30, 2025

    Likely audience: health-conscious individuals

  11. 11
    Simple Medicines—

    Substacklast post Nov 27, 2025

    Likely audience: health-conscious consumers

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