www.psychiatry.aero

Here are several links to the websites dedicated to dealing with flight related health issues as met by most consumers.  I will review these links in more detail in the near future but here are some of the popular search results:

Flight Health - a simple and well informed site of flight related health information.

Avoiding Altitude Sickness information - may be relevant if you are traveling to high country and staying there for a prolonged period of time (more than a day) - for example paragliding in Tibet...  Note: "According to the Centers for Disease Control, gingko biloba, if taken before ascent, has been shown to reduce symptoms of altitude sickness." is no longer true.  Ginko has been shown NOT to be helpful but other medications - such as Acetazolomide and Dexamethasone ARE helpful but must be prescribed by your doctor!

http://www.lifestraw.com/en/high/flaintro.asp - a very cool device, does not filter Giardia - but perfect in every other way! It is $15 straw like filtering device that filters enough water for a year of personal use. Now widely distributed by aid agencies in Africa. Highly recommend as an emergency water purification devise. Easily would fit into a smallest flight pack.