DEAR DOCTOR K: My wife and I are traveling to Europe in a few weeks, and we're already dreading the jet lag. Do you think melatonin will help?
DEAR READER: Many people find that crossing several time zones makes their internal clocks go haywire. Some small studies have suggested that melatonin can help jet lag if taken a few days before and after travel. Melatonin is a natural substance released by our brain to help coordinate our circadian (day/night) rhythm. This rhythm is disturbed when we travel across time zones. Melatonin is more effective in minimizing the effects on sleep of eastward travel.