What medical preparations the travelers need to make before Tibet tours?

Most Tibet tours are not highly demanding physically. However, the travelers need to be in good conditions and able to walk up and down moderate hills on a daily basis. In some cases they may be a day or more away from modern medical facilities. So it is better for the travelers with a pre-existing heart and lung problems to consult the doctors before taking Tibet tours. According to the scientific studies, high altitude sickness has nothing to do with the age, sex or state of fitness of the travelers and can affect anyone who travels to the areas with the elevation of over 10,000 feet. Consult the doctors for getting the prescribed medicines for the possible high altitude sickness.