Blog
Optimal blood pressure by age: Why 120/80 is not the right number for everyone
Discover the optimal blood pressure targets for every age group and how blood pressure control can slow biological aging and extend lifespan.
Pulse pressure: The hidden number that reveals your arteries' age
Discover what pulse pressure is, why values above 60 mmHg can signal higher cardiovascular risk, and how to optimize it for a longer, healthier life.
C-peptide: The true insulin indicator that blood sugar won't tell you
C-peptide reflects your pancreas insulin output. Learn how to read high or low values with glucose, A1c, fasting insulin, and metabolic risk trends.
AST/ALT ratio (De Ritis): What it reveals about your liver and longevity
Learn what the AST/ALT ratio can and cannot reveal about liver health, metabolic risk, alcohol patterns, exercise effects, and longevity research.
LDH: The cell damage enzyme that reveals how fast you're aging
Lactate dehydrogenase (LDH) is an underrated biomarker. Discover why elevated levels indicate tissue damage, accelerated aging, and what you can do to optimize them.
Urea and BUN: Your kidneys as a mirror of health (and longevity)
Blood Urea Nitrogen (BUN) is an often-overlooked kidney biomarker. Discover why blood urea predicts aging, what the optimal values are, and 6 strategies to protect yourself.
Chronic cortisol: How stress ages your body (and how to stop it)
Chronic stress and disrupted cortisol rhythms are linked with faster biological aging. Learn what cortisol tests show and evidence-based ways to lower stress.
NLR: The neutrophil-to-lymphocyte ratio hidden in your CBC that predicts longevity
The neutrophil-to-lymphocyte ratio (NLR) is a powerful biomarker of chronic inflammation and aging. Discover optimal values, what it reveals, and how to improve it.
ApoB: The real enemy of your arteries (and why LDL cholesterol isn't enough)
Apolipoprotein B is one of the clearest markers of atherogenic particle burden. Learn what ApoB is, when it beats LDL cholesterol, risk-based targets, and how to lower it.