Evidence-Based Health & Supplement Guides
For People Who Actually Read the Science
Skip the hype. Get the evidence. Know exactly what works — and why. No sponsored content. No proprietary blends.
Just the science.
80+ evidence-based guides · No sponsored content · Updated when research changes
Women Over 40
Perimenopause, bone density, hormones, energy, skin, sleep. The complete evidence-based
guide built for this stage.
General Health & Performance
Sleep, energy, immunity, stress, muscle, cognition. Build your first evidence-based stack from
scratch.
Evidence-Scored
Every supplement rated 1–5 based on clinical trial quality and independent replication.
No Sponsored Content
We don’t accept brand payments. Recommendations are research-driven only.
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Updated Regularly
Guides reviewed when significant new research is published.
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The PHS Evidence Score
Every supplement guide carries an Evidence Score — a 1–5 rating based on clinical trial
quality, sample sizes, independent replication, and effect size. You’ll never wonder if we’re quoting a brand’s own
research.
Magnesium Glycinate
4.2 / 5
23 RCTs · Strong replication
Vitamin D3 + K2
4.5 / 5
31 RCTs · Extensive evidence
Collagen Peptides
4.2 / 5
Good evidence · Dose matters
Tell Us Your Goal. We’ll Show You the Evidence.
Every path leads to a guide built for that goal — evidence-scored, with verified product picks.
Our Highest-Impact Guides
Ranked by evidence strength and practical impact — not publication date.
MOST POPULAR
Best Magnesium Supplements — Which Type Should You Buy?
Here’s something that surprises most people: magnesium supplements are not all the same.
If you only fix one deficiency, fix magnesium first — it shows up everywhere from sleep to hormone regulation.
The wrong type and you might as well be throwing your money away — some forms absorb so poorly that your body barely registers them. Buy the right type and you could see meaningful improvements in sleep, anxiety, muscle recovery, and energy within weeks.
12 min read · Evidence Score: 4.2/5
WOMEN 40+
Best Supplements for Women Over 40 — What Changes and What Helps
The decade from 40 to 50 brings more physiological change for women than almost any other adult period. … hormonal fluctuations affect sleep, mood, bone density, cardiovascular risk, body composition, and metabolic function simultaneously.
8 min read
INJURY RECOVERY
How to Recover Faster From Injury — The Evidence-Based Guide
Recovering from injury is not simply a matter of waiting long enough. Nutrition, targeted supplementation, sleep, movement, and the right recovery tools all influence how quickly tissue heals, inflammation resolves, and function returns.
8 min read
We’ll Also Tell You What NOT to Take
Negative recommendations are more trusted than positive ones. Here’s ours.
Biotin for Hair Growth
Evidence only supports it for diagnosed deficiency. Expensive…
Multivitamins (As Main Strategy)
Wrong doses, wrong forms, competing minerals. Better approach…
Most Collagen Drinks
You need 10g+ hydrolysed peptides. Most drinks contain 1–3g…
Fat Burners
Marketing almost entirely. Beyond caffeine and green tea…
Latest Evidence-Based Guides
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Best Fitness Technology for Beginners — Where to Start Without Wasting Money
Best fitness technology for beginners — what to buy first, what to skip, and how to build your kit without wasting money. Practical advice for 2026.
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Best Collagen Supplements — What to Buy and What to Avoid
The best collagen supplements are defined by one criterion above all others — dose. Collagen is now one of the best-selling supplement categories globally, driven by evidence that hydrolysed collagen peptides genuinely support skin elasticity, joint health, and connective tissue recovery. But the majority of products on the market provide doses far below what clinical…
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Best Recovery Tools for Runners — What Actually Speeds Recovery
Best recovery tools for runners compared — foam rollers, massage guns, compression socks and cold therapy. What actually speeds running recovery in 2026.
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Best Foods for Gut Health — What to Eat and What to Avoid
The best foods for gut health are not exotic superfoods or expensive supplements — they are specific categories of everyday foods that have strong evidence for supporting microbiome diversity (NHS digestive health guidance), intestinal barrier integrity, and digestive function. Understanding what actually feeds beneficial gut bacteria, what damages the microbiome, and how to practically build…
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Sleep Training Methods Compared — Which Approach Is Right for Your Family?
Sleep training methods vary enormously in their approach, their evidence base, and their appropriateness for different family situations. Choosing between extinction, gradual retreat, Ferber, the fading method, and other approaches requires understanding what each actually involves, what the evidence says about effectiveness and safety, and what will realistically work for your specific baby, family, and…
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Baby Weaning Foods — The Complete Beginner’s Guide
Baby weaning foods — the solid foods you introduce when your baby begins the transition from milk to a varied diet — represent one of the most exciting and anxiety-provoking milestones of the first year. When to start, what to offer, how much, and what to avoid are questions every parent faces, and the evidence-based…
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We Built a Tool For This
After writing 80+ supplement guides, the most common question was: How do I organise all this?
So we built The Supplement Stack Tracker — a Notion template with everything pre-built:
Not required to use our guides. For people who want to go deeper.