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The Function Journal

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When hustle costs your health
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Aging backwards: How to measure, slow, or reverse your biological age
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“The second time I saved my life”
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10 Powerful ways to lower your heart disease risk
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There are more than 6 types of magnesium—which one do you need?

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Stress is aging you faster than you think—here’s how to slow it down

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Electrolyte imbalance: Symptoms, causes, and how to fix it

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Is It Infertility–Or a Hormonal Imbalance You Can Fix?

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The Hidden Epidemic: Why Thyroid Disorders Often Go Undiagnosed

Real people. Real stories.

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“You can’t diet or exercise this away”

Catherine felt healthy, but the IGF-1 hormone test she added to her Function membership out of curiosity revealed an issue that led to finding a pituitary tumor. Through testing and self-advocacy, she had surgery, and saw her health improve.
Hear Catherine's story
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“You can be really healthy and still get cancer”

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Proactive MRI scans caught Holly’s cancer early—twice

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What started as a diagnosis became a turning point

The 9 guides for living 100 healthy years

Get the foundational guides for lifelong health. Built by top experts with decades of research.

Conversations that spark better health

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Dr. Mark Hyman x Honestly with Bari Weiss: How to Live Your Healthiest Life

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Dr. Mark Hyman x Huberman Lab: How to Improve Your Vitality & Heal From Disease

All articles

Male and Female Health
Nutrition and Lifestyle
Early Detection
Function News
Stress and Aging
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10 lab tests women should track when strength training

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Why your progesterone levels matter—and how to test them with Function

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From confused to confident: Morgan’s health breakthrough

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A phlebotomist’s guide to an easier blood draw

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Redefining postpartum: From powering through to tuning in

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Ralph's Wake-Up Call: The Hidden Heart Risk That Changed Everything

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"This is a revolution" - Melissa took control when standard labs weren't enough

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Function x Chase Sapphire: Spend Different

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A massive brain tumor and zero symptoms

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The healthiest patient

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A lingering question

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From dismissed to data-driven recovery

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The silent issues Emeline couldn’t feel

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The fatigue never made sense

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Function membership is now $365/year

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Function Function Announcement

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A genetic risk with no quick fix—why mindset is everything

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Turning 30—and taking charge

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How Loren caught prostate cancer before symptoms

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Danielle's Function Story

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The carcinogenic risks of environmental toxins: PFAS & BPA

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“The second time I saved my life”

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When hustle costs your health

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There are more than 6 types of magnesium—which one do you need?

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When high performance hides real risk

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The physical side of mental health: 5 habits for better mood

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The autoimmune wake-up call: Why testing early could change your life

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The Hidden Epidemic: Why Thyroid Disorders Often Go Undiagnosed

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The Critical Role of Insulin Sensitivity in Long-Term Health

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Stress is aging you faster than you think—here’s how to slow it down

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Proactive MRI scans caught Holly’s cancer early—twice

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Is It Infertility–Or a Hormonal Imbalance You Can Fix?

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How to book advanced imaging with Function

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Catherine's Function Story

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Electrolyte imbalance: Symptoms, causes, and how to fix it

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Decoding Male Reproductive Health and The Fertility Testing Playbook

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Detecting cancer early: Can blood tests like Galleri identify cancer markers?

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Dr. Mark Hyman x Huberman Lab: How to Improve Your Vitality & Heal From Disease

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Dr. Mark Hyman x Honestly with Bari Weiss: How to Live Your Healthiest Life

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What started as a diagnosis became a turning point

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“You can be really healthy and still get cancer”

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Aging backwards: How to measure, slow, or reverse your biological age

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6 Root causes of pancreatitis (that you may be missing)

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10 Powerful ways to lower your heart disease risk

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100 Healthy Years with Function

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