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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

  • MTHFR mutations can cause anxiety, fatigue and fertility issues. You likely have one.
    Fertility & Parenting, Women’s Health & Hormones

    MTHFR mutations can cause anxiety, fatigue and fertility issues. You likely have one.

    Hormones, Lab Testing, Supplements, Women’s Health
    Robin Berzin MD
    March 5, 2025

    Knowing your genes, including MTHFR, can help you lower your disease risk, improve metabolic health, and overhaul your mental health. 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

  • 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

  • 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

  • Why so many women are using creatine (including me)
    Women’s Health & Hormones

    Why so many women are using creatine (including me)

    Exercise, Longevity, Supplements, Women’s Health
    Robin Berzin MD
    July 8, 2025

    Women naturally store 20–30% less creatine than men. At 44, I’m calling this my Year of the Booty—aka time to prioritize building lean muscle mass. Creati Read more

  • Is estrogen the ultimate longevity drug?
    Women’s Health & Hormones

    Is estrogen the ultimate longevity drug?

    Hormones, Lab Testing, Longevity, Women’s Health
    Robin Berzin MD
    November 11, 2025

    What if one hormone could slash your risk of heart disease, stroke, breast cancer, and Alzheimer’s? That’s the potential of estrogen therapy. Read more

  • Brain, bones, booty: 3 things to take care of before you reach menopause. 
    Women’s Health & Hormones

    Brain, bones, booty: 3 things to take care of before you reach menopause. 

    Hormones, Lab Testing, Longevity, Women’s Health
    Robin Berzin MD
    May 15, 2024

    Your 40’s are a magic decade—the decade that can give you the most leverage when it comes to health span—if you know what to do with it. 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

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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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