While it's natural for people to shed (between 50 and 100 hairs every day), Cucinello says you might see an increase in the Fall when the weather begins to change. “Analysis of trichograms demonstrates annual periodicity in the growth and shedding of hair, manifested by a maximal proportion of telogen or resting hairs in Summer with a second peak in Spring, but not as significant. This leads to more hairs falling out in the late Fall, corresponding mostly to October and early November. It is unclear exactly why this is so but it is speculated that the stress of heat and sun may play a role,” Dr. Russak further explains.
What you can do: Both Cucinello and Dr. Russak insist seasonal hair loss is nothing to be concerned about. “This is perfectly normal among almost all mammals – your dog or cat might be experiencing it at the same time you are! See a doctor if the shedding increases or ceases to stop after the change of season," Cucinello advises.