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  • ADHD in Women: How Hormones Affect Focus and Diagnosis
    Women’s Health & Hormones

    ADHD in Women: How Hormones Affect Focus and Diagnosis

    Brain Health, Hormones, Mental Health, Women’s Health
    Robin Berzin MD
    March 6, 2026

    I co-authored ADHD research in my 20s and had no idea I had it myself. Here’s what perimenopause, estrogen, and dopamine have to do with your focus. Read more

  • Why GLP-1s Underperform Without Estrogen
    Women’s Health & Hormones

    Why GLP-1s Underperform Without Estrogen

    Blood Sugar & Metabolism, Hormones, Supplements, Women’s Health
    Robin Berzin MD
    February 26, 2026

    I had a patient gain 50 lbs in 6 months. GLP-1 alone did nothing. Adding HRT changed everything. Here’s the science behind why estrogen makes GLP-1s work. Read more

  • Fertility Over 35: 8 Evidence-Backed Levers
    Fertility & Parenting

    Fertility Over 35: 8 Evidence-Backed Levers

    Blood Sugar & Metabolism, Hormones, Lab Testing, Women’s Health
    Robin Berzin MD
    January 29, 2026

    I’ve identified 8 evidence-backed fertility levers for women over 35 — blood sugar, thyroid, stress, autoimmunity, toxins, and more — that most OBs never Read more

  • How Much Does Vigorous Exercise Really Matter?
    Longevity & Metabolic Health

    How Much Does Vigorous Exercise Really Matter?

    Blood Sugar & Metabolism, Exercise, Longevity
    Robin Berzin MD
    January 13, 2026

    Just 10 minutes of vigorous exercise may provide equal—or better—longevity benefits than an hour of low-intensity exercise. Read more

  • If You Only Fix One Thing for Longevity, Make It Your Mitochondria.
    Longevity & Metabolic Health

    If You Only Fix One Thing for Longevity, Make It Your Mitochondria.

    Blood Sugar & Metabolism, Exercise, Longevity, Supplements
    Robin Berzin MD
    January 6, 2026

    Mitochondria are the powerhouses of the cells. They’re also the biological foundation of aging. When they’re thriving, you’re thriving. Read more

  • Before You Set Any 2026 Health Goals, Read This
    Longevity & Metabolic Health

    Before You Set Any 2026 Health Goals, Read This

    Lab Testing, Longevity, Personal Story
    Robin Berzin MD
    December 23, 2025

    If there’s one thing I’ve doubled down on this year, it’s that health is a practice. Here’s how that’s shaping my health goals for 2026. Read more

  • Is your social life aging you?
    Longevity & Metabolic Health

    Is your social life aging you?

    Longevity, Mental Health, Personal Story
    Robin Berzin MD
    December 16, 2025

    Loneliness raises cortisol, accelerates cellular aging, and is as harmful as smoking 15 cigarettes a day. Here’s how I make longevity a team sport — and w Read more

  • The Cortisol Reset Every Woman Needs
    Women’s Health & Hormones

    The Cortisol Reset Every Woman Needs

    Hormones, Mental Health, Women’s Health
    Robin Berzin MD
    December 9, 2025

    The goal is to cultivate a healthy cortisol reset rhythm—high when you need it, low when you don’t.The problem is chronic cortisol. Read more

  • Is Sleep Consistency the Most Overlooked Lever of Longevity?
    Longevity & Metabolic Health

    Is Sleep Consistency the Most Overlooked Lever of Longevity?

    Blood Sugar & Metabolism, Longevity, Sleep
    Robin Berzin MD
    December 2, 2025

    Most sleep advice focuses on quantity. For women trying to improve metabolic health and reduce inflammation, sleep consistency matters more. Read more

  • What a CGM Can Tell You About Your Aging Velocity
    Longevity & Metabolic Health

    What a CGM Can Tell You About Your Aging Velocity

    Blood Sugar & Metabolism, Lab Testing, Longevity
    Robin Berzin MD
    November 25, 2025

    Energy, bloating, brain fog and weight gain are all tied to blood sugar. So is aging velocity. A CGM can help you optimize your longevity. Read more

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Robin Berzin MD

Robin Berzin MD is the founder of Parsley Health and your guide on the journey to being well.

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