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  • 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

  • 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

  • Metabolic flexibility: The secret engine behind energy, fat loss, and longevity.
    Longevity & Metabolic Health

    Metabolic flexibility: The secret engine behind energy, fat loss, and longevity.

    Blood Sugar & Metabolism, Exercise, Longevity, Sleep
    Robin Berzin MD
    October 21, 2025

    Metabolic flexibility is your body’s ability to switch between burning carbs and fat for fuel. It’s also the true engine of longevity. Read more

  • All your questions answered about Ozempic and GLP-1s
    Longevity & Metabolic Health

    All your questions answered about Ozempic and GLP-1s

    Blood Sugar & Metabolism, Longevity, Supplements
    Robin Berzin MD
    November 23, 2023

    Should I take Ozempic? Does the weight come back? What exactly are GLP-1s?GLP-1s, or Glucagon-Like Peptides, are hormones produced by the intestines that r Read more

  • My personal supplement stack.
    Toxins, Nutrition & Modern Exposures

    My personal supplement stack.

    Longevity, Personal Story, Supplements
    Robin Berzin MD
    May 14, 2025

    I get asked so often from people if the supplements they are taking are legit, I feel like I should set up a roadside stand with a sign that says: “Will ev 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

  • 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

  • 4 fasting for women strategies to optimize longevity
    Women’s Health & Hormones

    4 fasting for women strategies to optimize longevity

    Blood Sugar & Metabolism, Hormones, Longevity, Women’s Health
    Robin Berzin MD
    August 12, 2025

    The internet loves to argue: “Is fasting bad for women’s hormones?” But that’s the wrong question. We should ask: what type of fasting for women? Read more

  • How to Slow Brain Aging Starting in Your 40s
    Brain, Mood & Nervous System

    How to Slow Brain Aging Starting in Your 40s

    Brain Health, Hormones, Lab Testing, Longevity
    Robin Berzin MD
    November 20, 2025

    Your brain shrinks 5% per decade starting at 40. Here’s my 6-step protocol — labs, exercise, HRT, supplements — to slow cognitive aging before symptoms ev 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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