Living to 100 can be done, cancer expert says

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Fact.  Dr. Nelson says infections are more likely than vaccines to trigger lifelong immunity. (An exception is the flu; it changes strains every year.) But you may think twice about taking your little one to a chicken pox party. The problem with natural immunity is the risk of complications. Chicken pox can lead to encephalitis, pneumonia, or, if kids scratch too much, skin infections like MRSA. A polio infection can cause permanent paralysis; mumps, deafness; and Haemophilus influenzae type b (Hib), brain damage. "Those are the chances people take if they defer the vaccine," Dr. Nelson says. More from Health.com: 12 vaccines your child needs
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Many people dream of living long, healthy lives that end peacefully around the age of 100.

Dr. David Agus, cancer expert and author of the New York Times best-seller "The End of Illness," says it can be done.

Agus said on "CBS This Morning" that his medical philosophy is all about prevention.

"I'm a cancer doctor," he said. "I see every week people dying of cancer. And I can't stand it. We need to focus on prevention. We have the tools in our arsenal; We can actually prevent most disease. We just got to use them."

Agus suggests regularity of schedule, statins to prevent inflammation and avoiding vitamins, supplements -- and high heels. Watch the video in the player above for the Agus' full discussion on "CBS This Morning" with Gayle King and Charlie Rose.