Sunbeds are categorised by the World Health Organization (WHO) as dangerous with their cosmetic use increasing incidences of skin cancers and driving down the age at which skin cancer first appears
Conflicts of interest: none declared References Morse,H.N (1878)Ueber eine neue Darstellungsmethode der Acetylamidophenole[on a new method of preparing acetylamidophenol].Berichte der deutschen chemischen Gesellschaft.11(1):232-233.doi:10.1002/cber.18780110151 Ayoub SS, Botting RM, Goorha S, et al Acetaminophen-induced hypothermia in mice is mediated by prostaglandin endoperoxide synthase 1 gene-derived protein.Proc Natl Acad Sci USA.2004;101:11165-11169 Schilling A, Corey R, Leonard M, Eghtesad B.Acetaminophen:old drug, new warnings
Al-Aly, Z., Xie, Y
An increase in oxidative stress and cell damage causes an increased usage of glutathione and decreased levels
Each stage would need to reach clearly defined endpoints related to fertility outcomes like ovulation rate, clinical pregnancy, and live birth, not just more proximate biomarkers