Comprehensively, KD improved testosterone levels depending on both patients' age and KD-induced weight loss. However, the lack of information in included studies on hormones of the hypothalamic-pituitary-gonadal axis prevents an exhaustive comprehension about mechanisms connecting ketosis and testosterone homeostasis.
Ketogenic state improves testosterone serum levels-results from a systematic review and meta-analysis
References:
Furini (2023). “Ketogenic state improves testosterone serum levels-results from a systematic review and meta-analysis.” Endocrine