 |  | Healthy Living | |
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 | | Joan Lunden shares what she wishes she knew before breast cancer diagnosis | | Joan Lunden was diagnosed with breast cancer in June 2014. Today, she is cancer-free and has become an advocate for other women. | | | | | |  | | What is a cardiac arrest and why is it so deadly? | | Tom Petty's death is putting the spotlight on a condition that often strikes without a warning and can kill a person in minutes. | | | | | | | |
 | | 1 surprising factor that could make a flu shot more effective | | Doing this on the day you get your flu shot may boost the effectiveness of the vaccine, a new study suggests. | | | | | |  | | Even 1 hour of exercise a week can help fight depression, expert says | | NBC News medical contributor Dr. Natalie Azar joins Kathie Lee and to talk about the latest medical headlines, including a new study that shows that even small amounts of exercise can protect against depression. She also talks about new guidelines on mole removal to fight skin cancer, and research that shows adolescent girls may suffer concussion symptoms twice as long as boys. | | | | | | | |
 | | Woman thought swollen lymph nodes were cancer but it was her old tattoo | | Doctors originally thought a 30-year-old woman's swollen lymph nodes were a sign of cancer, but they were a symptom of a tattoo reaction. | | | | | |  | | New football helmet test could help protect kids from concussions | | The old helmet test only measured the linear force experienced by the head, but the new test allows the head to move in all directions. | | | | | | | |
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