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Evidence-based articles on biomarkers, longevity, and the science of preventative health — written by the ChXhealth team.

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Cortisol is your main stress hormone. Chronic elevation drives weight gain, poor sleep, anxiety and fatigue. Learn how a UK blo...

Cortisol gets a bad rap, but it's actually one of the most important regulatory chemicals your body produces. Here's how it wor...

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