How to Live to Be 100

Americans are living longer than ever thanks to medical advances and healthier lifestyles. In 1900, life expectancy in America was only 47.3. It rose to 77.9 in 2005, according the Centers for Disease Control and Prevention. Today, if you can make it to 70, you've got a good chance of living to age 85; and a growing number of people are reaching the 100 mark. In 1990 the country boasted 37,306 centenarians. By 2000, that number increased to 50,454. Last year 84,331 Americans celebrated their 100th birthday. By 2050, the U.S. Census Bureau predicts that 1.1 million of us will be 100 or older. Better start stocking up on birthday candles and fire extinguishers!

So what's the secret? Jeanne Calment of Arles, France, who died in 1997 at age 122, advised, "Always keep your smile." Here are more tips for reaching 100:

1. Be positive. The Mayo Clinic says cheerful, optimistic people live 50% longer than sourpusses.
2. Learn to manage your stress.
3. Just say no. Don't do things that stress you out.
4. Dance and sing.
5. Get a pet.
6. Exercise your body. Aim for 30 minutes of aerobic exercise a day.
7. Exercise your brain. Never stop learning.
8. Eat smart: more fruits and veggies, less red meat and fat.
9. Stay socially connected. Get out of the house and see people.
10. Quit smoking. Now.
11. Drink in moderation. A glass of red wine or ale a day reduces the risk of cardiovascular disease.
12. Get or stay thin. Thin people live longer.
13. Limit sun exposure. Skin cancer can kill you.
14. Keep track of your medications and take them.
15. Find a good doctor and go for regular checkups.