If your hair is growing slower than you would like, your diet may have something to do with it.
A new study conducted at Westlake University in Zhejiang, China, found that intermittent fasting can significantly reduce hair growth in people.
Intermittent fasting involves short periods of eating throughout the day, usually an eight-hour window of eating and 16 hours of fasting.
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Studies have shown that intermittent fasting can help with weight loss and management, heart health and memory, according to Johns Hopkins Medicine.
But the researchers found that there may be some unacceptable side effects, as a Chinese study said that other methods of intermittent fasting were shown to “inhibit hair follicle regeneration” in mice.
Researchers have found that intermittent fasting reduces hair growth in both mice and human subjects. (Stock)
The mice analyzed in the study were shaved and followed intermittent fasting schedules.
The group following the normal diet grew their hair after 30 days, according to a BBC Science Focus report. The fasting group showed only half the hair growth after 96 days.
The study, published in the journal Cell by Cell Press, concluded that extended fasting stimulates the adrenal glands, which then stops tissue regeneration during “periods of unstable nutrient supply.”
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This is also caused by stress on the hair follicle stem cells, reports the BBC. These follicles “died” in the moderate fasting group after a long period of fasting.
While the study found that mice experienced improved metabolic health and slower hair regeneration, the results may not be the same for humans, who have a lower metabolic rate and different hair growth patterns.
Slow hair regeneration is due to metabolic changes in the mid-morning cycle which causes stress on the hair follicles. (Stock)
In a follow-up human clinical trial, researchers studied 49 healthy young adults who followed an 18-hour-a-day fasting regimen.
This period has been found to reduce hair growth by an average of 18%.
Dr. Brendan Camp, a board-certified dermatologist in New York at MDCS Dermatology, reiterated that “small animal studies” suggest that fasting can affect the hair growth cycle.
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“The metabolic changes associated with fasting may put a kind of stress on hair growth that causes it to slow down,” Camp, who was not involved in the research, told Fox News Digital.
“It is thought that the oxidative stress that occurs during fasting – when the body switches from metabolizing fat instead of glucose – inhibits hair growth.”
In a human clinical trial, 18 hours of fasting per day reduced hair growth by 18% on average. (Stock)
To promote hair growth, Camp suggests making a few changes in diet, focusing on vitamins and nutrients such as iron, selenium, zinc, biotin, folate and vitamin D.
“[This] it can prevent nutritional deficiencies that may contribute to hair loss,” she said.
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A dermatologist warned that a “crash” or fad diet, or even diseases that lead to significant weight loss in a short period of time, can cause the development of a condition called “telogen effluvium.”
“In this case, a large amount of hair loss occurs as a result of some type of health event, whether it’s a physical illness or a very stressful life event,” he said.
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This research was supported by the National Natural Science Foundation of China, Key R&D Program of Zhejiang, Westlake Laboratory of Life Sciences and Biomedicine, Research Center for Industries of the Future (RCIF), and Center of Synthetic Biology and Integrated Bioengineering. at Westlake University, according to a press release.
Fox News Digital has reached out to the study’s authors for comment.
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