Foundations
Why Your Testosterone Drops 1% Every Year After 30
The science behind age-related testosterone decline, what actually matters, and what you can realistically do about it.
28 March 20268 min read
UK male hormone optimisation
Stop Guessing. Start Optimising.
Evidence-based testosterone & hormone optimisation for men over 40.
Top picks
The Foundational Stack
Three supplements every man over 40 in the UK should consider — evidence-backed, properly dosed, no fluff.
#1Editor's Pick
Magnesium Glycinate
The foundational sleep and recovery mineral — properly absorbed.
★★★★★4.8
From £12–£20
- ✓Superior absorption vs oxide or citrate
- ✓Proven impact on sleep quality
- ✓Cortisol regulation support
- ✓Available on Amazon UK and iHerb
- −Take at night — can cause drowsiness
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#2
Vitamin D3 + K2
Essential for UK men — most of us are deficient year-round.
★★★★★4.7
From £8–£15
- ✓D3 directly supports testosterone synthesis
- ✓K2 ensures calcium goes to bones, not arteries
- ✓Combined form is most efficient
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#3
KSM-66 Ashwagandha
The only adaptogen with solid clinical evidence for testosterone.
★★★★★4.5
From £15–£25
- ✓Reduces cortisol — the testosterone killer
- ✓KSM-66 is the gold-standard extract
- ✓8-week minimum cycle for results
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Reading
Start Here
Foundations
The Bloodwork Guide: What to Test and What the Numbers Mean
SHBG, free testosterone, LH, FSH — a plain-English breakdown of every marker worth knowing about, plus where to get tested privately in the UK.
28 March 202612 min read
Supplementation
Magnesium Glycinate: Why It's Better Than Every Other Form
Not all magnesium is equal. Here's why the glycinate form is the only one worth taking for sleep, recovery, and hormone support.
28 March 20266 min read
Evidence-based
No bro science, no filler
UK-focused
Private clinics, UK pricing, UK suppliers
Over 40
Written for men in this phase of life
Full-spectrum
From bloodwork to TRT to peptides