Research perspective · 2 October 2026
Fasting, hair regeneration and energy supply
A tissue-specific response that deserves attention beyond the weighing scale.
What the research found
Mouse experiments linked fasting to local fatty-acid release, oxidative stress and loss of activated hair-follicle stem cells. A short human trial also found slower hair growth; only 26 of 49 randomised participants had hair-growth measurements.
What it does not establish
This does not establish permanent human baldness or universal harm from fasting. Timing and calorie reduction must be distinguished. Human participants were healthy young adults, and long-term hair outcomes were not established.
A research question for EPK
EPK research could record meal timing and tissue-function outcomes alongside energy intake. A controlled study would hold calories and nutrient composition constant while varying the eating window, with complete follow-up and independent hair measurements.
Research and guidance
Explore more studies in the research library.
Related working papers
Read the relevant PDFs: EPK–001 to 007 are the revised version 1.2 papers; EPK–008 to 010 are version 1.0 supplements. Earlier PDFs and DOI records remain on the paper archive.