The question of whether stress can cause hair loss is a common one, and the answer is not always straightforward. While there is no definitive evidence that stress can directly lead to hair loss, there is some evidence that it can contribute to the condition.
For example, stress can lead to an increase in the production of the hormone cortisol, which has been linked to hair loss. Additionally, stress can also lead to changes in the immune system, which can make the hair more susceptible to damage and loss.