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  • 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

  • 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

  • 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

  • Is Sleep Consistency the Most Overlooked Lever of Longevity?
    Longevity & Metabolic Health

    Is Sleep Consistency the Most Overlooked Lever of Longevity?

    Blood Sugar & Metabolism, Longevity, Sleep
    Robin Berzin MD
    December 2, 2025

    Most sleep advice focuses on quantity. For women trying to improve metabolic health and reduce inflammation, sleep consistency matters more. Read more

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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