From Wikitravel

Health is an issue that affects all travelers, and especially those to off-the-beaten path destinations.

First Aid

Basic precautions are important to travel, and a minimal first aid kit should be carried by all travelers.

For more in-depth information see:

• First aid kit for travellers

Environmental Hazards

Different locations on the Earth may offer unique hazards to travelers, including dangers due to sun and altitude.

For more in-depth information see:

• Altitude sickness
• Sunburn and sun protection

Maladies

Malaria is an important concern in many areas of the world that requires special precautions. Other parts of the world include their own unique disease worries.

For more in-depth information see:

• Food poisoning
• Tropical diseases
• Malaria
• Mosquitoes