VITAMIN HIPPO
Men's Healthy Aging • Hormones • Performance

Health advice for men who want the evidence, not the hype.

Evidence-led guides for men navigating healthy aging, hormones and performance after 40 — with first-hand product experience clearly separated from the science.

Read the GenF20 Plus review Explore healthy aging
First-hand experienceProducts are reviewed with clear disclosure when the author has actually used them.
Evidence-awareWe separate personal observations from clinical evidence and manufacturer claims.
Built for 40+Our core focus is the questions men start asking as energy, recovery and hormones change with age.
Start here

Start with what brought you here

Instead of covering every supplement on the internet, this version of Vitamin Hippo stays focused on a few connected areas where men often need better explanations.

Primary topic

HGH & Healthy Aging

Growth hormone, IGF-1, sleep, exercise, aging and what “natural HGH support” actually means.

 Secondary topic

Testosterone & Aging

Evidence-based guides for the hormone questions that become more common after 40.

 Focused topic

Men's Performance

Sexual health and performance topics approached with more realism and less internet folklore.
Featured review

GenF20 Plus: revisiting a product I used years ago

I first wrote about GenF20 Plus years ago. The new review looks at the product again with a much higher bar: what I experienced personally, what the published study found, and where the marketing goes beyond the evidence.

Updated for 2026 / 2027

GenF20 Plus Review: My Experience, Ingredients, Evidence & Verdict

A first-person review with a transparent affiliate disclosure and a plain-English look at the randomized trial.

Read the full review
Built for men 40+

Research first. Experience where it matters.

Vitamin Hippo focuses on the questions that get louder in your 40s and 50s: hormones, recovery, sleep, body composition and sexual performance. Founder Tim Lekach has been publishing health and supplement content under the Vitamin Hippo name for years, including first-hand GenF20 Plus material that predates this version of the site.

Meet Tim & our editorial approachSee how personal experience, manufacturer claims and clinical evidence are kept separate.Watch the Vitamin Hippo archiveOriginal videos from the earlier Vitamin Hippo publishing run, including GenF20 Plus.
Latest guides

Latest from Vitamin Hippo

The testosterone library is now live, adding a full third content cluster alongside HGH & healthy aging and men’s performance.

Testosterone pillar

Testosterone After 40

What changes, how testing works and what actually helps.

Symptoms

Signs of Low Testosterone After 40

What symptoms can—and cannot—tell you about low T.

2027 comparison

Best Testosterone Boosters Over 40

Testosil, TestRX and Testodren compared by ingredients and evidence.

Men’s Performance

Morning Wood After 40

Testosterone, REM sleep, blood flow—or something else?

Also explore: Growth Hormone After 40, Best Natural HGH Releasers and Jelqing Before & After.