The secret to living to 100, according to research

Centenarians, or those who are at least 100 years old, are a growing portion of the United States, and research says a mixture of good genetics and good habits are behind living to such an advanced age, Alex Janin reports for the Wall Street Journal.

Infographic: Past, present, and future care for an aging population

Genetics play a key role in living to 100

According to Thomas Perls, a professor of Medicine at Boston University and leader of the New England Centenarian Study, which has followed centenarians and their family members since 1995, around 25% of your ability to live to...