Some researchers believe that human hair loss is caused by imbalanced nutrition  When the body cannot absorb balanced nutrients, hair follicles will shrink, leading to hair loss  However, some opponents believe that hair loss is caused by damage to hair follicles  After the hair follicle is damaged, it is in a state of false death
Damage to the hair follicle prevents it from absorbing nutrients from the scalp, leading to hair loss
 The hair follicle degenerates and shrinks, causing the hair to stop growing and gradually wither and fall off