Planning and preparation reduce health risks of travel (air travel and foreign travel). So travelers should carry their medication, spare glasses or replacement lenses (and a current prescription for it) and hearing aid batteries in hand baggage, in the event that the checked baggage is delayed, lost or stolen. The drugs should be kept in their original packaging. Who must lead opiates, needles or large quantities of drugs with him on trips, should result in a regulation or a confirmation letter from the doctor with him in order to avoid any security or customs problems. A medical report (incl. ECG with significant heart disease) in the case of an illness while traveling invaluable. Travelers with diseases that can lead to a loss of control (eg. As epilepsy), or with chronic diseases a band for identification should wear on the wrist or around the neck.