The Best Why Does Chemo Cause Hair Loss Ideas. Because some types of chemo attack not only cancer cells but also cells that multiply quickly, those drugs are more likely to cause hair loss. Hair on other parts of the body is not usually affected.
Hair loss from chemo starts about two weeks following the first treatment and will begin to regrow once the chemo is finished. Not every chemotherapy drug causes hair loss. Worn while chemotherapy is being given, the cap is.
