DEAR DOCTOR K: My teenage son doesn't like sports or exercise. Diabetes runs in our family. You say exercise protects against diabetes and is valuable even in young adults. Can you give me some ammunition to convince my teenager to exercise?
DEAR READER: Perfect timing: A new study has been published that provides an answer. Most studies of exercise have been in adults, often older adults. Until this recent study, there wasn't a lot of information about teenagers.