New Study shows Fasting causes Hair Loss
Physionic
Jan 8, 2025
Mindsip insights from this episode:
Limit fasting to maintain hair regrowth rate
In the human trial, a weight-maintenance intermittent fasting diet (18-hour fast) resulted in a statistically significant reduction in the rate of hair regrowth.
Maintain hair density despite slower regrowth in fasting group
Despite a slower regrowth rate in the fasting group, the study found no difference in the actual density of hair shafts on the scalp.
Understand fasting effects: slower hair growth, not loss
The speaker's interpretation is that while fasting may cause hair to grow more slowly, it does not necessarily mean you will lose hair or reduce the number of hairs.
Acknowledge limitations of short human study on hair thickness
The human portion of the study was only about 11 days long, which limits the ability to draw conclusions about long-term effects on hair thickness.
Understand fasting duration differences between mice and humans
An 18-hour fast in a mouse is metabolically equivalent to several days of fasting for a human, which is critical context for interpreting the animal data.
Uncover hidden human trial in fasting and hair loss study
A recent study on fasting and hair loss contained a randomized controlled human trial that was buried within the supplemental mouse data.
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