Here's heart-stopping news: Fact: Heart disease is the leading killer in the U.S. Fact: 3 in 4 U.S. adults have hearts older than they are, says the U.S. Centers for Disease Control and Prevention! U.S. News and World Reports reported September 1 that the CDC found 75 percent of Americans are old at heart and at risk of heart disease, heart attack and stroke. Women's hearts average 5.5 years older than their calendar ages. And men's hearts are 8 years older! Everyone ages, can't stop that, but here are tips to keep hearts young. CDC: 3 in 4 US adults have hearts older than they are: Tips to keep hearts young - Grand Rapids News | Examiner.com