• Mayo Clinic Minute: A chemist’s historic holiday discovery

A black and white photo of chemist edward kendall in a lab.Thyroid problems affect up to 10 percent of women and 3 percent of men. That helps explain why levothyroxine, a synthetically made thyroid hormone, is the most commonly prescribed medication in the U.S. And it was a Christmas Eve discovery at Mayo Clinic that made it possible. Here’s Dennis Douda with this Mayo Clinic Minute.

Watch: The Mayo Clinic Minute

Journalists: A broadcast-quality video pkg (0:59) is in the downloads. Read the script.