Traveling comes with a whole new set of things to think about. The following can help you stay healthy and enjoy your trip as much as possible.

Tips for flying

Flying is not always fun. But you can take steps to make it easier and to feel better during and after your flight.

• Pack anything that may cause problems at security-such as gels, liquids, sharp scissors, or pocket knives-in the luggage you plan to check. Leave lighters and matches at home. For an updated list of what is not allowed in carry-on luggage, see the Transportation Security Administration Web site at www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm.
• Wear roomy, comfortable shoes that slip on and off. These are easy to remove when you go through security at the airport. They will also be more comfortable if your feet swell on the plane.
• Take steps to prevent jet lag:
  • Drink lots of liquids and limit caffeine and alcohol. The dry air on airplanes makes it easy to get dehydrated. And caffeine and alcohol can make dehydration worse. Carry your own water to make sure you are getting enough.
  • Pack food in your carry-on bag. You may not get food on your flights or have time to eat between flights. If you pack your own food, you will be in control of what and when you eat.
  • Get up and walk around on the plane when possible. This is a good idea for anyone on a long flight, but it is especially important if you are at risk for blood clots.
  • Consider packing a neck pillow, eye cover, or earplugs to help you sleep on your flights. For longer trips, your doctor may be able to prescribe medicines to help you sleep better.
  • Change your sleep schedule to your new time zone. If you arrive at your destination during the day, try not to sleep until nighttime. This helps your body adjust better to your new time zone.

If you have a fear of flying, talk to your doctor. He or she may recommend medicines, hypnosis, or breathing, visualization, and relaxation exercises to help you feel less afraid.

Water and food safety

Contaminated water and food are the most common cause of illness in travelers. These illnesses range from an inconvenient case of travelers' diarrhea and the norovirus (Norwalk virus) seen on cruise ships to severe cholera.

Since it's difficult to know if tap water is properly treated, most doctors recommend avoiding tap water if there is any doubt. Safe beverages include drinks made with boiled water, such as tea and coffee. Otherwise, drink only canned or bottled carbonated beverages (including carbonated bottled water and soft drinks) and beer and wine. Ice should also be considered contaminated and should not be used in beverages. Dry the opening of wet cans or bottles before taking a drink. Remember not to brush your teeth with tap water.