Harvard scientists have just discovered a major cause of baldness – BGR

We are all different in an endless number of ways. From our height to the color of our eyes, there are things that define who each of us is, which often cannot be changed. Sure, you can wear thick-soled shoes to gain an inch of stature or put on colored contact lenses, but baldness is something most people only accept as part of who they are. Hair loss is often hereditary, which means it has been passed down through the generations, but it is not the only cause, and researchers have worked to find out how we can slow down the progress of hair loss or even prevent it with certain interventions.

Now, a new study by the same team of Harvard scientists, which found clear links between stress hormones and premature gray hair, has returned with another paper. It examines the links between stress and hair loss, and the findings could be a big step towards developing treatments to prevent hair loss in some people.

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Stress can have an incredible impact on our body and is often negative. Stress can affect sleep patterns, cognition and physical health in a variety of ways. When it comes to our hair, stress hormones can cause hair follicles to start growing gray hair earlier than they might otherwise, and based on this new round of research, it can also cause hair follicles to close.

The study, which used mice as a model for hair growth, loss and regeneration capabilities, found that hair follicle stem cells are quite sensitive. When thrown out, the growth and resting phases between which the follicles normally flow deform. The cells end up spending more time dormant than they should and, as you would expect, hair loss and lack of regeneration follow.

As animals age, including mice and humans, hair follicles tend to spend more and more time in the resting phase, but researchers have been able to reverse this. They eliminated the stress hormones that affected the hair follicles, and the hair began to grow faster, even in older mice. Part of hair loss is related to age and genetics, but stress (or lack thereof) can change things for better or worse.

“So even the initial level of the stress hormone that normally circulates in the body is an important regulator of the resting phase,” said Ya-Chieh Hsu, lead author of the study published in The nature, said in a statement. “Stress essentially raises this ‘adrenal gland – the axis of the hair follicle,’ which makes it even more difficult for hair follicle stem cells to enter the growth phase to regenerate new hair follicles.”

Removing stress from your life may be impossible, but the findings of this new round of researchers could eventually lead to treatments that will stimulate hair growth or stop hair loss.

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