This just in from that bastion of journalistic objectivity, FOX news –
Health tips for frequent (or infrequent) flyers –

Swelling of intestines means avoid overeating? Avoid junky food? [C'mon, flying's a new great excuse to nab some fast food between flights!]

Drink lots of water, but NOT from the unregulated bathroom source.

Earache? Put a warm towel on ear.

Keep babies alert during takeoff and landing to clear sinuses.*

Afrin and Claritin for adult sinus problems.
DO NOT drink the bathroom water, it's cleanliness is not regulated.

Last seat in Coach in aisle is safest statistically.

Gone Scuba? Wait 12-24 hours before flying