This is why Sikh men experience such hair loss - their beard hair is pulled straight and twisted and tightly knotted.It is this daily knotting that leads to traction alopecia.

• 这也是为什么部分锡克人常常会经历脱发的原因，他们终生不剪头发，成年锡克男子一般都将头发用布层层围起，绕成一个像“大磨盘”的头包，这种对头发频繁的拉拔导致了牵引创伤性脱发。