FYXLIFE Knowledge Center
Insights on longevity, nutrition, fitness, sleep, and living well — backed by your data.
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NAD+ Testing Guide: When and How to Test Your Levels
Spending money on NMN without a baseline? Learn what to test, when to retest, and how to interpret your NAD+…
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Oestrogen And Brain Health: What Women Must Know
Brain fog, mood swings, memory lapses — oestrogen does far more in your brain than you think. Here’s the mechanism…
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Cortisol Supplements & Stress Tech: What Works?
Exhausted despite doing everything right? Here is what the evidence actually says about cortisol supplements, wearables, and stress-lowering claims.
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Perimenopause and Heart Disease Risk: The Myth Crushed
Think heart disease doesn’t affect women? The research says otherwise. Here’s what happens to your cardiovascular risk the moment estrogen…
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Homocysteine Test: What the Research Really Shows
Your heart panel came back normal — but was homocysteine tested? Here’s what the clinical evidence actually shows about this…
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Marathon Training Protocol: Evidence-Based Guide
Already running but not racing well? This evidence-based marathon protocol covers intensity structure, strength training, fuelling, and tapering for runners…
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Cortisol Cascade: What Ashwagandha Actually Does
Chronic stress breaks metabolism, immunity, and hormones in sequence. Here is the evidence on how ashwagandha interrupts that cascade —…
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Micronutrient Deficiency Protocol: Test, Fix, Maintain
Still tired despite eating well? This step-by-step protocol shows you how to test for micronutrient deficiencies, correct them with food…
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Cognitive Focus Tests: What to Test & When | SuperDoc
Brain fog isn’t a feeling to ignore — it’s a signal to measure. Here’s exactly which tests track attention decline,…