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For hair growth, the relevant signaling pathways are: vascular stimulation (more blood flow to the dermal papilla), follicle repair (extending the anagen growth phase), inflammation modulation (calming the chronic low-grade inflammation that contributes to follicular miniaturization), and systemic growth signaling (IGF-1 levels that influence overall regenerative capacity)
The longest rodent toxicology study (90 days) found no organ damage, hepatotoxicity, or nephrotoxicity at doses up to 50mg/kg daily, establishing a NOAEL well above human trial doses
Animal research requires additional oversight from ethics committees
This increases the activity of sirtuins (SIRT1) and PARPs, which are essential for DNA repair and longevity
Avoid drinking large amounts of alcohol while using vitamin B12
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