Most of the electrical appliances in your home emit electric and magnetic fields (EMFs). Some studies have shown that regular exposure to even low levels of low-frequency electromagnetic radiation may be bad for our health, interfering with normal cell function and perhaps leading to the development of cancer and other diseases. There are easy ways to reduce your exposure—don’t stand near appliances when they’re running and, instead of using a hair dryer, towel dry your hair. There also are low-EMF hair dryers available online for about $100.