The researchers concluded that intermittent fasting regimens inhibit hair follicle regeneration by selectively inducing apoptosis in activated hair follicle stem cells, leading to hair loss.
In experiments with mice, both time-based and alternate day fasting impaired hair follicle regeneration significantly, indicating a detrimental effect of fasting on hair growth.
Researchers observed that while hair did regrow in fasting subjects, it was often shorter and thinner in diameter than before, signaling permanent changes.
MIT biologist Ömer Yilmaz expressed shock at the study's findings, challenging the assumption that fasting benefits most cell types and good for stem cells.
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