The reason is very obvious, in one's homeland; one knows where everything is; hospitals, police stations, emergency rooms, banks etc. Whereas in foreign lands, finding even a good hospital is a very difficult task and in case of emergencies one is often caught in a situation where one does not know what to do or where to go.
Therefore, to avoid any unfortunate circumstances and prepare for the worst case scenario, one should try to plan holidays and holidays carefully. Each and everything involved in a holiday trip should be planned out carefully including health and safety. For example, the food we eat and the drinks we use should also be considered carefully because it is also possible that the food and water might be polluted.
The native inhabitants are immune to the harsh conditions of their area and thus they might not be affected by the pollution or other factors due to this immunity. However, the foreign visitors who have not experienced any such conditions before might find it difficult to adapt and thus may fall sick.
Holidays in areas with lots of trees and plantation might also pose a danger to some individuals. Some people are allergic to pollen or some plant and thus might not be able to adjust in a location with such conditions. Similarly, some people are not accustomed to extreme climates and might find problems in adjusting in such environments. Therefore one should make certain that the climate of the region they are planning to visit is acceptable to their bodies and that they would be able to survive in those conditions.
Maintaining proper nutrition is also one of the key factors to planning a healthy holiday. Nutrition is very important for a healthy life. Although, people might not realize it, but even a single day of mal nutritious food might cause problems in the longer run. Therefore, it is very important to consider the food one consumes at his/her trips and make sure that proper nutrition is included in all meals.
You can suffer from some diseases or permanent ailments which might get aggravated due to intense conditions, in such a case it is very important to take all the needed emergency medications along with you on the trip. It is also advisable to consider all the hospital and clinics in the area to make sure that one knows where to go in case of emergency.
It is always advisable to beware of insects and some dangerous plant allergies if one is planning for an exotic holiday. These areas are prone to containing some insects or plants which might cause allergies. Therefore, one should take a good supply of mosquito repellents, lotions and other anti allergy medications.