6,376,509 (disclosing a small molecule asserted to be a melanocortin receptor agonist in a pharmaceutical composition including a PDE-5 inhibitor)
Valero-Muoz M, Backman W, Sam F
you can't cure it any more than you could cure sweating or breathing), but it can be brought back to normal or close to normal levels
One proposed function of sleep may be the mitigation of oxidative stress in both brain and peripheral tissues, contributing to the clearance of reactive species that accumulate during wakefulness
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Pitt B, Filippatos G, Agarwal R, Anker SD, Bakris GL, Rossing P, Joseph A, Kolkhof P, Nowack C, Schloemer P, et al