Traumatic events and constant stress are a big cause of female hair loss. Many women find that after they experience large amounts of grief or stress, their body responds by losing large clumps of hair. This is due to prolonged increase in cortisol.
Cortisol, which is supposed to help you focus and fight to get yourself out of trouble when experiencing trauma, is detrimental to hair loss when it occurs constantly or in too often.
Cortisol also affects your thyroid and estrogen levels, which are both potential causes of female hair loss. These also lead to weight loss resistance and a whole host of OTHER health problems.