Warmer weather could be linked to hair loss, a study found.
It also claimed countries in the northern hemisphere were most at risk of losing their hair.
Richer countries were also at risk, it was revealed by the Johns Hopkins University School of Medicine researchers.
The summer and fall seasons are associated with greater hair loss
“This finding is clinically relevant for patients presenting in the summer and fall months with worsened hair loss and has implications in assessing the effectiveness of therapies.
“Future research will further clarify this association and examine the physiology of the hair cycle.”
Warmer temperature was linked to a grater risk of hair loss in the study, but the scientists will now investigate whether ultraviolet radiation plays any role.
Hair loss is more common in the northern hemisphere
Stem cells were used to grow hair follicles.
The follicles were then transplanted onto humans.
Any future therapy would be able to treat all types of hair loss, including pattern baldness and various types of alopecia.