FYXLIFE Knowledge Center
Insights on longevity, nutrition, fitness, sleep, and living well — backed by your data.
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Gut and Immune System Connection Explained
Most of your immune system lives in your gut. Here’s how the gut-immune connection works, why it breaks down, and…
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Fasting Insulin Test Protocol: What to Order & How
Your glucose is ‘normal’ but something feels off. Here’s the exact protocol to test fasting insulin, HOMA-IR and metabolic health…
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Plant vs Animal Protein: What New Research Shows
You have been optimising your protein source for years. New systematic reviews say the answer is more nuanced — and…
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Rapamycin Testing Guide: What to Test & When
Taking rapamycin for longevity? Know exactly what to test before you start, at 4–12 weeks, and ongoing — plus what…
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Breathwork and Nervous System: Myths vs Evidence
Still wired at 3am despite breathwork? The nervous system reset promise is real — but the timeline is a myth.…
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Oestrogen and Brain Health: Is HRT Worth It?
Brain fog at perimenopause isn’t in your head — it’s neurological. Here’s what the evidence actually says about oestrogen therapy…
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VO2 Max Explained: Endurance, Longevity & How It Works
You track it. But do you understand it? VO2 max is your body’s aerobic ceiling — and the strongest predictor…
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Low Testosterone Brain Fog: The 3-System Cascade
Brain fog at 45 isn’t just stress. Low testosterone triggers a metabolic, cardiovascular, and cognitive cascade most men miss. Here’s…
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CoQ10 Testing Guide: What to Test and When
Already taking CoQ10 but have no idea if it’s working? Here’s exactly what to test, when to test, and how…