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[DOI] [PubMed] Liu X, Green RM
Heart rate variability (HRV) as a biomarker of autonomic balance
Endocrinology and metabolism 298 , E751E760, doi: 10.1152/ajpendo.00745.2009 (2010)
And at the level of cell membranes , glutathione helps protect the fatty layer that surrounds each cell, keeping it intact and able to absorb nutrients and communicate properly
cAMP, intracellular cyclic adenosine monophosphate
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Causes of Skin Aging: Intrinsic aging (your genetic clock), sun exposure (photoaging), collagen and elastin degradation, and environmental damage
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