Content Hub
In-depth research reviews, clinical perspectives, and evidence summaries written by the physicians and scientists on our advisory board. No sponsored content. No wellness theatre.
Biomarkers
The 10 Biomarkers Worth Tracking Before You Turn 40
Standard annual labs catch disease. These 10 markers catch drift, the slow erosion of optimal function that precedes disease by years or decades.
Biomarkers
VO2 Max: The Number That Predicts Longevity Better Than Almost Anything Else
A 2018 JAMA study found low cardiorespiratory fitness carried a higher mortality risk than smoking, diabetes, or hypertension combined. Here's what VO2 max measures and how to move the number.
Biomarkers
Inflammation Markers: The Silent Signal Your Blood Work Is Probably Missing
Chronic low-grade inflammation drives heart disease, cognitive decline, and accelerated aging, yet most standard labs miss it entirely. Here's what to test and what to do.
Supplements
NAD+ Precursors: NMN vs. NR, Parsing the Evidence in 2025
Both compounds raise cellular NAD+ levels. But the pathways differ, the research quality varies widely, and the price gap is significant. Here's what the evidence actually supports.
Supplements
Magnesium: The Most Underrated Supplement (and Why Most People Are Deficient)
Magnesium participates in over 300 enzymatic reactions. An estimated 50-60% of Americans don't get enough. The consequences are wide-ranging, and most people never connect them.
Supplements
The Truth About Omega-3s: Dose, Form, and What the Evidence Actually Shows
The omega-3 story has been through boom and bust cycles. The truth is more nuanced than either the hype or the backlash, and it starts with understanding that dose is almost everything.
Supplements
Berberine: What the Research Actually Says About This "Natural Metformin"
The comparison to metformin made berberine a breakout supplement. The science behind it is real, but more nuanced than the hype suggests.
Hormones
Testosterone Optimization in Men Over 40: Beyond the Basics
Low testosterone is diagnosed at epidemic rates, yet most treatments ignore the upstream causes. A functional approach starts with root causes, not replacement reflexes.
Hormones
Cortisol: The Stress Hormone That's Quietly Running (and Sometimes Ruining) Your Health
Cortisol isn't the villain it's made out to be. But chronic dysregulation of your body's primary stress hormone is one of the most underappreciated drivers of metabolic dysfunction and accelerated aging.
Hormones
Your Thyroid Is Running Your Life. Here's How to Know If It's Off.
Millions with thyroid dysfunction have been told their labs are "normal." Here's why a TSH test alone misses most of the picture, and what a complete thyroid panel looks like.
Hormones
The Perimenopause Conversation Nobody Has Early Enough
Perimenopause can begin in a woman's late 30s, a decade before menopause. The symptoms are often misattributed, and the treatment options are far better than most women are told.
Sleep
Why Slow-Wave Sleep Is the Longevity Metric Nobody Talks About
While most people optimize for total sleep hours, the architecture matters as much as the duration. Stage 3 deep sleep is when the brain clears itself and growth hormone peaks.
Sleep
Why 8 Hours Isn't Always the Answer: Understanding Sleep Architecture
Sleep isn't a single state, it's a series of 90-minute cycles through distinct stages, each serving a different biological purpose. The structure matters as much as the duration.
Sleep
Your Body Clock Is a Drug: The Science of Circadian Medicine
Every cell in your body runs on a roughly 24-hour biological clock. When your lifestyle is misaligned with that clock, the consequences go far beyond tired mornings.
Sleep
Sleep Trackers: What Your Wearable Gets Right, and What It Misses
Consumer sleep trackers have improved dramatically, but they're still not sleep labs. Understanding their strengths and limitations helps you use them as tools, not oracles.
Nutrition
Time-Restricted Eating: What the Science Actually Says Right Now
After years of hype and a controversial 2024 study, the evidence on time-restricted eating is more nuanced than headlines suggest, and when you eat may matter more than how long your window is.
Nutrition
Protein After 40: Why You Probably Need More Than You Think
The RDA for protein was designed to prevent deficiency, not optimize muscle preservation. After 40, the gap between adequate and optimal becomes consequential.
Nutrition
The Microbiome Revolution: What Your Gut Is Actually Doing (and Why It Matters)
The trillions of microbes in your gut regulate immune function, produce neurotransmitters, metabolize hormones, and influence everything from body composition to cognitive function.
Nutrition
Mediterranean, Carnivore, or Plant-Based: What the Evidence Actually Says
The diet wars generate heat but rarely light. Cutting through the tribalism, the evidence consistently points to what longevity-promoting dietary patterns share, not where they differ.
Longevity
The Hallmarks of Aging: What Scientists Now Know, and What You Can Do About It
Researchers have catalogued twelve distinct biological processes that drive aging. Understanding them isn't just academic, most are addressable with interventions available right now.
Longevity
Rapamycin for Longevity: An Honest Assessment of the Evidence
The mTOR inhibitor that extends lifespan in nearly every animal model studied is now being prescribed off-label for healthy adults. Here's what we know, what we don't, and what the risks actually are.
Longevity
Zombie Cells: The Science of Senolytics and What It Means for You
Senescent cells, cells that stop dividing but refuse to die, accumulate with age and drive inflammation and tissue dysfunction. A new class of drugs and supplements may be able to clear them.
Longevity
The Blue Zones Revisited: What Centenarians Actually Do Differently
The Blue Zones concept has been celebrated and criticized. Setting aside the controversy, the consistent patterns in populations with exceptional longevity reveal clear, actionable insights, and they aren't about supplements.
Functional Medicine
Root Cause Medicine: Why "Your Tests Are Normal" Doesn't Mean You're Healthy
Conventional medicine is built to diagnose disease. Functional medicine is built to identify dysfunction before it becomes disease. The difference changes everything about what questions get asked.
Functional Medicine
The Gut-Brain Axis: How Your Microbiome Shapes Your Mood and Mind
Roughly 90% of your body's serotonin is produced in your gut. The connection between your microbiome and your mental health is more direct, and more actionable, than most people realize.
Functional Medicine
Functional Lab Testing 101: The Tests Your Doctor Probably Isn't Running
Standard lab panels are screening tools for disease. These functional tests reveal hidden dysfunction beneath a "clean bill of health", and most can be ordered without a physician.
Functional Medicine
Toxins and Your Health: Separating Real Risks from Wellness Fearmongering
The wellness industry has turned "toxins" into a marketing device. Some environmental exposures are genuine health concerns. Others are not. Here's how to tell the difference.
Supplements
The Snake Oil Salesman Never Left Town
The phrase "snake oil" comes from a real man, a real product, and a real federal case in 1917. Here is the true history of health fraud, and why its oldest playbook is thriving on your supplement shelf today.
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