Intermittent Fasting Could Be Thinning Your Hair: New Study Reveals
While boosting metabolism, popular diet may have unexpected effects on hair volume.

Intermittent Fasting Gains Popularity
Intermittent fasting has become a buzzworthy eating plan, celebrated for its ability to aid in weight loss, regulate blood sugar levels, and reduce inflammation. Many dieters are turning to this method to improve their overall health. However, a new study brings to light an unexpected side effect that could concern those who value their hair's volume and thickness. While the benefits are significant, it's important to consider all aspects before starting this diet.
Study Reveals Impact on Hair Growth
Recent research conducted on both mice and humans has uncovered a link between intermittent fasting and slower hair growth. In the study, mice restricted to an eight-hour eating window showed improved metabolic health but experienced reduced hair regrowth compared to those with unlimited food access. Similarly, a small human trial found that participants who fasted for 18 hours daily saw their hair regrow 18% slower than those who didn't fast. These findings suggest that fasting might affect hair health alongside its metabolic benefits.
How Fasting Affects Hair Follicles
The study delves into the science behind how intermittent fasting influences hair growth. Fasting causes the body to switch from using sugar to stored fat for energy, releasing free fatty acids in the process. These fatty acids can damage hair follicle stem cells, which are essential for hair regrowth. The damage to these cells may lead to thinner hair or slower hair growth, highlighting a potential downside of the fasting regimen.
Balancing Benefits and Side Effects
Intermittent fasting offers several health advantages, such as improved blood sugar control and reduced inflammation. However, it's not without its drawbacks. The potential for hair thinning is an unintended effect that could deter some individuals from adopting this eating plan. It's crucial to weigh the positive outcomes against the possible side effects to make an informed decision about whether intermittent fasting is right for you.
Potential Solutions to Hair Thinning
Researchers are exploring ways to mitigate the negative effects of intermittent fasting on hair growth. One promising approach involves the use of vitamin E, an antioxidant known to support hair health. In studies, applying vitamin E to the skin of mice helped protect hair follicle stem cells during fasting periods, promoting healthier hair regrowth. Developing such solutions could allow individuals to enjoy the benefits of fasting without compromising their hair volume.
Looking Ahead: Future Research and Recommendations
The study's authors plan to continue their research by collaborating with hospitals to further understand how intermittent fasting affects wound healing and the regeneration of other cells. They aim to identify substances that could support hair growth during fasting. Meanwhile, medical experts caution that intermittent fasting may not be suitable for everyone, especially those who restrict their eating window too severely. It's advisable to consult with healthcare professionals before starting any new dietary regimen.
Conclusion
Intermittent fasting remains a powerful tool for improving metabolic health, but it's important to be aware of its potential side effects on hair growth. While the diet offers significant benefits, the possibility of thinner hair may influence individuals' decisions to adopt this eating plan. Ongoing research aims to find ways to balance the advantages of fasting with the preservation of hair health, ensuring that those who choose to fast can do so without unwanted consequences.