Healthspan HQ

Healthspan HQ

We cite the study, not the influencer. Evidence-first health and longevity, graded by strength of evidence.

Latest research

Exercise Physiology

Zone 2 cardio: the unsexy training that longevity research loves

It's slow, it's boring, and it may be one of the highest-return things you can do for a long healthspan. The case for easy cardio.

Women's Health

Women were told to do cardio. The research points elsewhere.

Strength training may be the most under-prescribed longevity lever for women. And it takes far less time than the cardio era led you to believe.

Exercise Physiology

The 10,000 steps myth; and what the number should actually be

The famous step target came from a marketing campaign, not a study. The real research points somewhere lower: and more encouraging.

Supplements

Vitamin D: the supplement most likely to actually matter

Most supplements are a waste of money. Vitamin D is the rare one with a real case; if, and only if, you're actually deficient.

Metabolic Health

The fasting timeline: what actually happens at 12, 16, 24, 48 and 72 hours

Fasting is oversold and underspecified in equal measure. Here's an honest, hour-by-hour map of what the evidence supports; graded from solid to speculative.

Men's Health

Testosterone for men: the foundations, the supplements, and the honest hierarchy

From the lifestyle basics that move testosterone most, through the natural supplements graded by real evidence, to how modern prescription options like oral testosterone differ from old-style injections. What actually works, ranked honestly.

Men's Health

Tadalafil beyond the bedroom: the metabolic and longevity evidence

Tadalafil, better known as Cialis, has quietly accumulated research on insulin sensitivity, blood-vessel health and even mortality, well beyond the use it’s famous for. A careful look at what holds up and what stays speculative.

Sleep

Sleep consistency may matter as much as sleep duration

Everyone fixates on getting eight hours. Newer research suggests when you sleep: and how regularly, may matter just as much.

Longevity

The sauna evidence is better than the hype

Most wellness trends collapse the moment you read the papers. This one gets stronger: twenty years of Finnish cohort data, and the caveat that keeps it honest.

Exercise Physiology

REHIT and HIIT: the 10-minute case for near-maximal effort

Zone 2 builds your aerobic base. To actually push VO₂max. One of the strongest predictors of longevity, you need short, hard efforts. The science says it takes remarkably little time.

Longevity

Red light therapy: what 660nm and 850nm actually do; and what they don’t

Red light panels are one of the better-evidenced biohacking tools, for specific things, at specific wavelengths and doses. Here's how to separate the real effects from the marketing glow.

Nutrition

How much protein do you actually need? More than the label says.

The official minimum keeps you from deficiency. The amount that supports muscle, satiety, and healthy ageing is meaningfully higher.