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  • How to Choose a Protein Powder That Actually Works
    Toxins, Nutrition & Modern Exposures

    How to Choose a Protein Powder That Actually Works

    Exercise, Nutrition, Supplements, Women’s Health
    Robin Berzin MD
    April 21, 2026

    I make a protein smoothie 4–5 times a week. Here’s what most people — and a major smoothie chain CEO — don’t know about what’s actually in their powder. Read more

  • Vaginal Estrogen: Prevention, Not Last Resort
    Women’s Health & Hormones

    Vaginal Estrogen: Prevention, Not Last Resort

    Hormones, Longevity, Women’s Health
    Robin Berzin MD
    April 15, 2026

    My grandmother didn’t have to suffer through chronic UTIs and sepsis. A $20/month cream could have changed everything — and the research now proves it. Read more

  • GLP-1s and Libido: What the Research Shows
    Women’s Health & Hormones

    GLP-1s and Libido: What the Research Shows

    Blood Sugar & Metabolism, Hormones, Supplements, Women’s Health
    Robin Berzin MD
    April 7, 2026

    GLP-1s silence food noise — but they reach the same brain circuits that govern sex, motivation, and desire. Here’s what the research actually shows. Read more

  • Normal Labs but Still Tired? 7 Root Causes
    Women’s Health & Hormones

    Normal Labs but Still Tired? 7 Root Causes

    Hormones, Lab Testing, Mental Health, Women’s Health
    Robin Berzin MD
    March 31, 2026

    Your labs came back normal. So why are you still exhausted? When I ran my friend’s labs, we found seven things. All subtle. None normal. Here’s what to test. Read more

  • Bone Loss, Inflammation & Gut Health: The Missing Link
    Women’s Health & Hormones

    Bone Loss, Inflammation & Gut Health: The Missing Link

    Gut Health, Hormones, Supplements, Women’s Health
    Robin Berzin MD
    March 24, 2026

    I was diagnosed with osteopenia last year and discovered the third driver of bone loss most women never hear about: inflammation from visceral fat, and how the gut is the fix. Read more

  • Perimenopause Symptoms: What the Research Shows
    Women’s Health & Hormones

    Perimenopause Symptoms: What the Research Shows

    Hormones, Lab Testing, Women’s Health
    Robin Berzin MD
    March 22, 2026

    I’ve been dealing with hormonal acne at 45. Here’s what I’ve learned treating perimenopause for a decade — and what the 2025 research changes. Read more

  • Plasmapheresis for Longevity: What the Research Shows
    Longevity & Metabolic Health

    Plasmapheresis for Longevity: What the Research Shows

    Longevity, Supplements, Women’s Health
    Robin Berzin MD
    March 14, 2026

    My patients keep asking about plasmapheresis. Two 2025 studies finally gave me something real to work with — and the picture is more complicated than the $10,000 price tag suggests. Read more

  • 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

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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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