The Ick Factor: Can worms cure common illnesses?

Most of us have heard of the hygiene hypothesis. It’s the theory that all of our antibacterial soaps and scrubs and sprays are actually weakening our immune systems. But here’s something new: Scientists say you may be able to treat certain diseases like autism and multiple sclerosis by ingesting the same worms we’ve spent all those years trying to kill. The Takeaway talks to Dr. Joel Weinstock, chief of the division of gastroenterology and hepatology at Tufts University Medical Center.