Have a medical check-up. Make sure you are healthy before you travel.
Update your vaccinations and ask about other immunisations.
Pack a medical kit for yourself and any children travelling with you. Make sure you pack enough of any medications you need, or take a prescription.
Organise travel insurance, including cover if you need to be evacuated to a suitable hospital.
Have a dental checkup.

Have a vision check and pack a spare pair of glasses.
Vaccinations

You may want to arrange vaccinations or drugs to protect against diseases such as hepatitis, typhoid or malaria. In fact, some countries legally require travellers to have certain vaccinations, such as yellow fever. As you will need to have some vaccinations weeks or months before travel, it is best to see your doctor six to eight weeks before you go. However, if you have to travel at short notice, you can still have some vaccines. Your doctor will be able to advise which vaccines are suitable depending on:
Your medical history and age

Your destination and likely accommodation

The season in which you are travelling

The length of stay

The type of travel, for example bus tour or backpack.

Tips for older travellers
For older people, the risk of death or serious illness while travelling is the same, or even less, than staying at home. However, planning is important and older travellers should consider the following before they travel:
See your doctor for a checkup and discuss your fitness for the trip you are planning.
See your dentist and optometrist.
Pack a spare pair of glasses, any medications you need and a small medical kit.
Organise travel health insurance with pre-existing illness cover if needed. Make sure it covers emergency evacuation.
Make sure routine immunisations are up-to-date and get vaccinated against influenza and pneumonia.
Consider your back - use luggage with built in wheels.
Take clothes and hats to suit the climate.
If concerned about your health, consider taking an organised holiday.

This is a great post. If you are going somewhere further away than you would usually go, always make sure that you are completely healthy before departing. I would make sure that you have any vaccinations that you may need. For example, if you are going to be traveling to Africa, you may want to get a vaccination against Malaria.

Wow! Great ! It seems you are well experienced traveler. these ideas will be very helpful for me since I am very careless girl.

Thanks very helpful information

Yea good information and it's important to have a checklist before you travel.

Very helpful post indeed. I always check with my doctor before doing any traveling especially when it comes to extreme sports or areas

Thanks for the info