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  • 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

  • The best “calm tech” to hack your vagus nerve
    Brain, Mood & Nervous System

    The best “calm tech” to hack your vagus nerve

    Brain Health, Mental Health, Supplements
    Robin Berzin MD
    December 18, 2024

    I’m fascinated with tech that promotes high “vagal tone,” i.e. stimulates the vagus nerve to help improve stress response. 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

  • Brain, Mood & Nervous System

    Neuroplasticity and the “New Year, New You” Craze

    Brain Health, Longevity, Mental Health
    Robin Berzin MD
    December 27, 2023

    So what does it actually take to make a meaningful change in your life? Here’s what I’ve learned. Read more

  • Brain, Mood & Nervous System

    How to balance cortisol levels to increase energy and lose weight

    Blood Sugar & Metabolism, Hormones, Mental Health, Sleep
    Robin Berzin MD
    May 29, 2024

    Treating patients’ health issues from weight gain to infertility often includes a plan to balance cortisol levels. Here’s what you can do. Read more

  • Brain, Mood & Nervous System

    How to reduce stress in 15-minutes

    Brain Health, Hormones, Mental Health, Sleep
    Robin Berzin MD
    November 6, 2024

    Chronic stress increases risk of diabetes, cardiovascular disease, and Alzheimer’s. But too often we brush it off. Here’s how to reduce stress. Read more

  • Brain, Mood & Nervous System

    Plant medicine can be a tool, but it’s not a cure.

    Brain Health, Mental Health, Personal Story
    Robin Berzin MD
    February 6, 2025

    Plant medicine should be used in therapeutic or guided ceremonial settings run by well-trained and experienced facilitators. Read more

  • The breathing habit that will transform your health overnight.
    Brain, Mood & Nervous System

    The breathing habit that will transform your health overnight.

    Brain Health, Mental Health, Sleep
    Robin Berzin MD
    June 24, 2025

    Did you know that you have a signature breathing pattern akin to your fingerprint that can be used to identify you with 96.8% accuracy? We are how we breat 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 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

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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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