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Sleep is equally relevant: testosterone is primarily produced during sleep, and research has found that even one week of sleeping five hours per night reduces testosterone levels by approximately 10 to 15% in young men, a reduction equivalent to ageing ten to fifteen years
Previous studies suggested this to be a result of pancreatic beta-cell hyperplasia and hypertrophy, possibly as a result of the increased GLP-1 levels [4, 23]
Oxidative stress (inflammation) influences oocytes (eggs), spermatozoa (sperm), embryos and their environments
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Effects of early nutrition and growth on brain volumes, white matter microstructure, and neurodevelopmental outcome in preterm newborns
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