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There are avenues for compassionate use in truly dire cases, but a middle-aged athlete wanting to speed up tendon healing is not a case of life-threatening need
Timing matters because NAD+ synthesis and sirtuin activity follow circadian rhythms controlled by the suprachiasmatic nucleus
While no specific harm has been documented, the absence of research means risks cannot be adequately assessed
Supplementary material The Supplementary Material for this article can be found online at: References 1 AmicF.DrmicD.BilicZ.KrezicI.ZizekH.PeklicM.et al (2018)
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