The shedding that occurs a few months after giving birth is a result of the sharp drop in estrogen levels at the end of pregnancy. Also, an overactive or underactive thyroid can cause hair loss. Most hormone-related alopecia is reversible. Normal hair growth returns once the medication is discontinued. The condition can usually be resolved with medication.
Most hair loss is hereditary.
Although the genetic code cannot be altered, there are effective ways to reverse or conceal the effects of hair loss. Rogaine needs to be applied twice per day to increase hair growth. They look great and no one would ever know the transplanted hairs originated elsewhere. Stylists suggest highlights, henna, or total hair coloring to help add volume. Body waves can also help disguise thinning hair.