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In vitro and in vivo analyses highlight its primary metabolite, Ac-LKKTE, as exhibiting the most pronounced activity related to cellular repair, with other metabolites such as Ac-LKK and Ac-LK exhibiting longer persistence but reduced bioactivity

Skin texture begins to refine visibly rough patches smooth as superficial collagen remodeling begins

Knowing which metric moved, and whether it rose above baseline or only fell more slowly, is what separates a lasting result from a temporary one, which is also why measuring brain aging across several markers at once gives a steadier read than any single number

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Nutrition & Food Research 59 (7), 13641372