Blog
Apple Watch HRV accuracy: how reliable is it?
Apple Watch HRV accuracy is useful for trends but limited for single readings. Learn what studies say, why SDNN matters, and how to use it.
Non-HDL cholesterol vs ApoB: which is more useful?
Non-HDL cholesterol vs ApoB: learn what each lipid marker shows, when non-HDL is enough, and when ApoB gives a clearer cardiovascular risk signal.
Hostility and cardiovascular aging: how chronic anger ages the heart faster
Cynical hostility predicts heart disease and accelerated aging. Why chronic anger damages arteries — and what 50 years of research says about reversibility.
Erectile dysfunction as a cardiovascular warning sign: why ED can precede heart symptoms by 3-5 years
Erectile dysfunction can be an early cardiovascular risk signal. Learn why ED may precede heart symptoms and what clinical checks to discuss.
hs-CRP normal range: when does low-grade inflammation actually matter?
hs-CRP normal range explained: the low/medium/high cardiovascular risk thresholds, why under 1.0 mg/L is the longevity target, and how to read your number in context.
ApoB normal range by age and risk category: Decoding your lipid panel
ApoB normal range by age, sex, and risk category: how to interpret your number, when to worry, and what cutoffs matter most for cardiovascular longevity.
ApoB vs LDL cholesterol: Which marker matters more for longevity?
ApoB vs LDL cholesterol compared: why ApoB captures atherogenic particle count LDL can miss, when discordance matters, and how to act on your lipid panel.
Aging after 60: the 5 health markers that matter most
After 60, walking speed, grip strength, balance, VO2 max, and cognition reveal functional aging. Learn how to measure and improve each marker.
Blood pressure by age chart: normal ranges for men and women
Complete blood pressure chart with normal ranges by age and gender. Learn what your systolic and diastolic numbers mean and when to take action.