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Gut Health
What Are Postbiotics? Probiotics vs Prebiotics, Explained
Postbiotics are the compounds your gut bacteria produce after digesting prebiotic fibre. The science, the studies, and whether a supplement is worth it.
The Library
Every guide. In one place.
33 researched guides on hormones, longevity, gut health, beauty from within, and sleep. Browse by section above, or scroll the whole catalogue below.
Volume 2026
33 guides 2026
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Longevity
Akkermansia: The Gut Bacterium Worth Knowing About
Akkermansia muciniphila is one of the most studied gut bacteria in metabolic and longevity research. What it does, why it matters, and how to support it.
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Sleep & Nervous System
How Your Gut Microbiome Controls Your Sleep
Your gut microbiome directly regulates sleep quality through circadian rhythm pathways. The specific foods, fibres, and probiotics that make a measurable difference.
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Longevity
NAD+ and Longevity: What the New Research Means for You
NAD+ levels drop by half between your twenties and fifties. New research links this decline to both cellular ageing and gut microbiome health. The science and the supplements.
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Hormone Health
Testosterone in Perimenopause: What the Research Actually Shows
Testosterone is not just a male hormone. It declines steadily in women from the early thirties, and the symptoms are easy to miss.
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Hormone Health
Tongkat Ali: What It Is and Why It Matters After 30
Eurycoma longifolia has clinical trial data for testosterone, cortisol, and stress. A clear guide to what it does, who benefits, and how to take it.
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Hormone Health
Creatine for Perimenopause: What the Evidence Actually Shows
Creatine is not just for athletes. Emerging research suggests it may support cognition, muscle preservation, and energy during the hormonal transition.
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Sleep & Nervous System
Why Do I Wake Up at 3am? Cortisol, Blood Sugar and Sleep Architecture Explained
The popular answer is cortisol. The real answer is more interesting and more useful. Three separate mechanisms explain early morning waking, and knowing which one applies to you changes what you do about it.
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Beauty From Within
Does Castor Oil Actually Work? An Honest Look at the Viral Wellness Trend
Castor oil packs, hair growth, hormone balance, liver detox. We sort the genuine evidence from the TikTok folklore, claim by claim.
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Longevity
TUDCA: The Liver Supplement With Actual Clinical Evidence Behind It
Tauroursodeoxycholic acid has human trial data showing 40 to 51% reductions in liver enzymes. Here's what it is, who needs it, and how to dose it correctly.
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Longevity
Equi London Review: Are These Premium Supplements Worth It?
A deep, honest look at Equi London's formula range, the ingredients, the science, the price tag, and whether they actually deliver.
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Hormone Health
Menopause and Insomnia: Why Your Sleep Architecture Changes and What Actually Helps
Oestrogen and progesterone fluctuations disrupt sleep architecture measurably. Here's the science and what works.
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Longevity
NMN Bio Review: Is This the Best NMN Supplement in the UK?
A detailed, ingredient-level review of NMN Bio, the UK longevity brand offering pharmaceutical grade NMN with third party purity testing and clear sourcing.
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Beauty From Within
GHK-Cu: The Anti Ageing Peptide Every Woman Should Know About
The copper peptide that's quietly rewriting the anti ageing playbook, what the research says, and how to use it.
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Longevity
NMN Supplements: What the Science Actually Says About Ageing
NMN, NAD+, and the longevity science that's moved from theory to supplement shelf. What's real, what's hype.
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Beauty From Within
Clean Beauty vs Chemical Beauty: What Actually Matters for Your Skin
Clean beauty vs conventional beauty: what the science actually says about the ingredients on your skin.
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Longevity
The Complete Daily Wellness Routine (Backed by Science)
A morning-to-evening wellness routine built entirely on published research, every habit, every supplement, every reason.
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Hormone Health
Perimenopause Supplements That Actually Work: A Complete Guide
The supplements with actual clinical evidence behind them for perimenopause symptoms, ranked by what they address.
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Beauty From Within
The Best Collagen Supplements for Women Over 35: Ranked & Reviewed
Six months of testing the brands that actually move the needle on skin, joints, and connective tissue after 35.
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Beauty From Within
Tallow Cream: Why Women Are Switching to This Ancient Skincare Secret
The ancient skincare ingredient making a science backed comeback, what tallow cream does, and the best clean formulations.
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Hormone Health
Why Every Woman Should Know Her Cycle, Cycle Syncing Explained
How to eat, train, supplement and rest in sync with your menstrual cycle, and why it changes everything.
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Gut Health
Leaky Gut: What It Is, Why It Matters and How To Heal It
Intestinal permeability explained clearly: what leaky gut actually is, why it matters, and the approach to heal it.
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Gut Health
Best Probiotics for Women in 2026: What Actually Works
We tested every major probiotic marketed to women. Here are the only ones worth your money in 2026.
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Gut Health
The Gut Skin Connection: Why Your Skin Problems Start in Your Gut
Why your skin problems might start in your gut, and the protocol that addresses both from the inside out.
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Gut Health
How To Improve Your Gut Health in 30 Days: A Practical Plan
A practical guide to gut healing, built from the principles of microbiome science.
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Hormone Health
The Best Adaptogens for Stress, Hormones and Energy
Ashwagandha, rhodiola, reishi, maca, which adaptogens actually have evidence, and which are marketing.
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Hormone Health
High Cortisol in Women: Signs, Causes and How To Lower It Naturally
The cortisol crisis most women don't recognise, signs, root causes, and evidence backed strategies to lower it.
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Hormone Health
The Complete Guide to Perimenopause: Starting in Your 30s
Everything you need to know about perimenopause, starting from your thirties. Symptoms, timelines, and what actually helps.
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Sleep & Nervous System
The Best Magnesium Supplements for Sleep and Anxiety: A Complete Guide
Glycinate, threonate, citrate, threonate, which magnesium for which kind of sleep problem. An evidence backed breakdown.
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Hormone Health
Signs Your Hormones Are Imbalanced, And Exactly What To Do About It
A clinician-referenced map of the hormonal symptoms most women dismiss for years, and the specific approaches that address each one.
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Longevity
The Best Supplements to Take in Your 30s, 40s and 50s
A decade-by-decade guide to the supplements that matter most, based on how your body's needs shift with age.
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Sleep & Nervous System
How To Fix Your Sleep: The Only Guide You Will Ever Need
The complete, evidence backed guide to fixing your sleep, from supplements to circadian hygiene to the 10-3-2-1 rule.
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Longevity
What Happens to Your Body After 35 (And How To Slow It Down)
What actually changes in your body after 35, why it changes, and the specific interventions that slow each process.