Evidence-Based Supplement & Herb Guides

Vestibular Health and Brain Longevity: Dizziness, Balance, and Navigation

Vestibular health supports brain longevity by improving balance, gaze stability, spatial navigation, walking confidence, and fall prevention through targeted care and training.

The vestibular system is the inner-ear balance network that tells the brain where the head is, how fast it is moving, and which way...

Vision, Contrast, and Brain Aging: Lighting, Lenses, and Safety

Protect brain aging and fall safety by improving vision, contrast, lighting, lenses, glare control, and home design for clearer daily navigation.

Clear vision is not just an eye issue. The brain uses visual information to judge distance, detect edges, read faces, guide movement, and stay...

A1c, Fasting Glucose, and Fasting Insulin: Testing for Healthy Aging

Learn how A1c, fasting glucose, fasting insulin, and HOMA-IR work together to reveal insulin resistance, glucose control, and metabolic risk for healthy aging.

A1c, fasting glucose, and fasting insulin tell different parts of the same metabolic story. A1c shows average blood sugar exposure over roughly 2 to...

Ambulatory and Nighttime BP: When 24 Hour Monitoring Matters

Learn when 24-hour ambulatory blood pressure monitoring matters, how nighttime BP affects long-term risk, and how to interpret ABPM patterns with confidence.

Blood pressure is not one number. It rises when you hurry, falls during quiet rest, changes after meals, and usually dips during sleep. A...

B12, Folate, and Homocysteine: Brain and Metabolic Clues

Learn how B12, folate, and homocysteine reveal brain, nerve, blood, metabolic, and vascular clues, including who should test and how to interpret patterns.

Vitamin B12, folate, and homocysteine sit at the crossroads of nerve function, red blood cell production, DNA repair, methylation, and vascular health. A single...

Body Composition and Muscle: DEXA vs BIA vs Tape

Compare DEXA, BIA, and tape measurements for body composition, muscle, waist-to-height ratio, and longevity tracking with practical guidance on accuracy and use.

Body composition shows how much of your weight comes from fat, lean tissue, bone, and water. The number on a scale misses that distinction....

Bone Density for Longevity: DEXA Scans Explained

Learn how DEXA scans measure bone density, what T-scores and Z-scores mean, who should get tested, and how to use results to protect mobility and longevity.

A DEXA scan gives a clear, low-radiation look at bone mineral density, usually at the hip and spine. In a longevity plan, that matters...

Continuous Glucose Monitoring for Longevity: Setup, Accuracy, and Use Cases

Learn how continuous glucose monitoring supports longevity, including CGM setup, accuracy limits, glucose metrics, food testing, exercise timing, and practical use cases.

Continuous glucose monitoring gives a moving picture of how your body handles food, exercise, sleep, stress, and daily routines. Instead of a single fasting...

Coronary Artery Calcium for Longevity: Score, Risk, and Follow-Up

Learn how coronary artery calcium scoring helps assess heart disease risk, interpret CAC score ranges, guide prevention, and plan follow-up for longevity.

Coronary artery calcium testing gives a direct look at calcified plaque in the arteries that feed the heart. That makes it different from standard...

Functional Longevity Tests: Grip, Gait Speed, and Sit to Stand

Learn how grip strength, gait speed, and sit-to-stand tests reveal functional longevity, mobility reserve, fall risk, and real-world strength as you age.

Grip strength, gait speed, and sit-to-stand performance give a fast, low-cost picture of how well the body turns muscle, balance, coordination, and energy into...

Genetics in Longevity: APOE, Pharmacogenomics, and What’s Actionable

Learn how APOE, pharmacogenomics, and actionable genetic findings fit into a longevity plan, including medication safety, dementia risk, screening, and family testing.

Genes shape risk, drug response, and family health patterns, but they rarely give a complete forecast. In longevity work, a genetic result is most...

Home Blood Pressure for Longevity: Proper Measurement and Targets

Learn how to measure home blood pressure accurately, choose a validated monitor, interpret averages, understand targets, and use readings to protect long-term heart, brain, and kidney health.

Blood pressure is one of the most useful at-home health signals because it reflects the daily load placed on arteries, the heart, kidneys, brain,...

Inflammation Markers for Healthy Aging: hs-CRP and Beyond

Learn how hs-CRP and other inflammation markers fit into healthy aging, cardiovascular risk, metabolic health, frailty prevention, and practical follow-up testing.

Inflammation is not automatically bad. It repairs tissue, fights infection, and helps the body respond to injury. The problem is persistent, low-grade inflammation that...

Iron and Ferritin: Interpreting the Panel Without Overdoing It

Iron and ferritin: Learn to read labs—ferritin, TSAT, TIBC—spot deficiency vs overload, avoid pitfalls, and know when to supplement or see a specialist. Now.

Iron status affects oxygen delivery, energy production, brain function, exercise tolerance, restless legs, hair shedding, pregnancy, and several chronic diseases. It also has a...

Kidney Health in Healthy Aging: eGFR and Albumin-to-Creatinine Ratio

Learn how eGFR and albumin-to-creatinine ratio reveal kidney filtration, albumin leakage, aging-related risk, testing frequency, and practical kidney protection steps.

Kidney health rarely gets attention until a number looks abnormal. That is a mistake. The kidneys help control blood pressure, fluid balance, mineral balance,...

Lipids for Longevity: ApoB and Non-HDL as Primary Markers

Learn why ApoB and non-HDL cholesterol are stronger longevity-focused lipid markers than LDL alone, how to test them, what ranges mean, and how to lower risk.

A longer, healthier life depends heavily on keeping arteries open, flexible, and well supplied. Blood lipids matter because atherosclerosis builds quietly for decades before...

Lipoprotein(a) and Longevity: Who Should Test and What Levels Mean

Learn who should test lipoprotein(a), what Lp(a) levels mean, why high Lp(a) affects longevity, and what to do when this inherited heart risk marker is elevated.

Lipoprotein(a), usually written as Lp(a) and pronounced “L-P-little-a,” is one of the most overlooked cardiovascular risk markers in preventive health. It is mostly inherited,...

Microbiome Testing for Longevity: When It Helps and When to Skip

Microbiome testing for longevity is useful only with a clear question. Learn when stool tests help, when to skip them, and what gut health actions matter most.

The gut microbiome is linked with digestion, immune signaling, metabolism, inflammation, and medication response. That makes microbiome testing sound like a shortcut to a...

NAFLD Screening for Longevity: ALT, AST, FIB-4, and Ultrasound

Learn how ALT, AST, FIB-4, ultrasound, and elastography fit together for NAFLD and MASLD screening, fibrosis risk, and long-term metabolic health.

Fatty liver disease is one of the most useful metabolic warning signs to look for before symptoms appear. A person can feel well, have...

OGTT vs Mixed-Meal Test: Choosing a Glucose Challenge

Compare OGTT and mixed-meal testing for glucose, insulin, CGM patterns, diabetes risk, and real-life meal response so you can choose the right metabolic test.

An OGTT and a mixed-meal test both ask the same broad question: how well does your body handle a glucose challenge? The difference is...