Jane Says...

Traveling in different time zones disrupts the production of Melatonin. Lack of light is what causes the pineal gland to secrete this hormone. (this is why it is important for your bedroom to be as dark as possible) Basically, when it's dark, the pineal gland makes melatonin and our bodies think 'Time for bed!'
It's because of this fact, so many people advocate the use of Melatonin supplements. These supplements are over the counter here in the U.S. but It’s a bit more difficult to get hold of in the UK because the Medicine and Healthcare Regulatory Agency (MHRA) takes the view that it is a medicine.
It is irresponsible and unethical to blindly and without reservations recommend ANY drug for sleep without consulting a physician first. Sleep aides react differently with the elderly as with interacting with any other prescription drugs you may be taking. Talking to your doctor first is the smartest thing to do as is looking into alternative means of dealing with the problem. Remember, exposing yourself to light, suppresses the melatonin production and keeps you awake and darkness, or lack of light is your bodies cue to 'Sleep, perhaps to Dream...'
Improving your golf swing, buddy, YOU'RE ON YOUR OWN!!!
SleepCompass.com Jane