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  • 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

  • How to Pick a Protein Bar That’s Actually Healthy
    Toxins, Nutrition & Modern Exposures

    How to Pick a Protein Bar That’s Actually Healthy

    Blood Sugar & Metabolism, Gut Health, Nutrition, Supplements
    Robin Berzin MD
    August 21, 2025

    Most protein bars are ultra-processed junk in disguise. Here’s what to avoid, the 4 bars I actually recommend, and why ingredients matter more than the ma Read more

  • Longevity & Metabolic Health

    Loooongevity: Which Treatments & Therapeutics Actually Work?

    Lab Testing, Longevity, Supplements
    Robin Berzin MD
    November 29, 2023

    I’ve reviewed the full spectrum of longevity treatments — from lifestyle to therapeutics. Here’s my honest breakdown of what the evidence actually suppor Read more

  • Toxins, Nutrition & Modern Exposures

    5 Summer Essentials I Can’t Live Without

    Personal Story, Skin & Beauty, Supplements
    Robin Berzin MD
    June 26, 2024

    It’s summer and this means I’m constantly throwing my go-to stack of protection from the elements in my bag or the stroller before I head out the door. I g Read more

  • Longevity & Metabolic Health

    Should you be taking peptides?

    Longevity, Personal Story, Supplements
    Robin Berzin MD
    July 10, 2024

    Peptides are everywhere in longevity circles right now. I’ve dug into the research — here’s what I actually think works, what’s overhyped, and what I’m Read more

  • Longevity & Metabolic Health

    How to boost your immune system before it fails

    Gut Health, Longevity, Nutrition, Supplements
    Robin Berzin MD
    October 9, 2024

    Can you really boost your immune system with diet and exercise? Here’s what I’m doing to fortify myself for cold and flu season. Read more

  • Longevity & Metabolic Health

    Is NAD+ the key to energy and longevity?

    Blood Sugar & Metabolism, Longevity, Supplements
    Robin Berzin MD
    March 20, 2025

    Nicotinamide Adenine Dinucleotide (NAD+) plays a key role in cellular energy production and DNA repair. It’s an anti-aging powerhouse. Read more

  • The cold plunge controversy
    Longevity & Metabolic Health

    The cold plunge controversy

    Exercise, Longevity, Supplements
    Robin Berzin MD
    June 17, 2025

    It’s summer and it feels like everyone is installing a cold plunge in their backyard or basement spa Read more

  • Should we all be microdosing GLP-1?
    Longevity & Metabolic Health

    Should we all be microdosing GLP-1?

    Blood Sugar & Metabolism, Longevity, Supplements
    Robin Berzin MD
    July 1, 2025

    If you’re frustrated that your body composition isn’t changing, microdosing GLP-1 might be the key. Read more

  • Your bone density blueprint
    Women’s Health & Hormones

    Your bone density blueprint

    Hormones, Lab Testing, Supplements, Women’s Health
    Robin Berzin MD
    July 22, 2025

    The official guidelines on bone health are bananas to me. Women lose 10-20% of their total bone mass in their 40s and 50s. So the fact that most guideli 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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