Washington: Sudden cardiac arrest happens when the heart suddenly stops working and can no longer function properly. It occurs in more than 350,000 individuals in the United States yearly. While heart related deaths occur much less frequently in young people, it is especially devastating to families, schools and the extended community when young, apparently healthy people die unexpectedly.

Durham: Meditation eases anxiety, fatigue and pain for women undergoing breast cancer biopsies, according to researchers at the Duke Cancer Institute. They also found that music is effective, but to a lesser extent.

Washington: The Zika virus outbreak and related health issues — including an observed increase in neurological disorders and neonatal malformations in Brazil — led World Health Organization officials to declare a Public Health Emergency of International Concern on Feb.1.

Maywood: The widespread belief that radiation from X-rays, CT scans and other medical imaging can cause cancer is based on an unproven, decades-old theoretical model, according to a study published in the American Journal of Clinical Oncology.

Rochester: Expanding lung cancer screening to include people who quit smoking more than 15 years ago could detect more cases and further reduce associated mortality, according to a study by Mayo Clinic researchers published in the Journal of Thoracic Oncology.

Lexington: “More people know about heart health now than they did 20 years ago," said Dr. Gretchen Wells, Director of Women's Heart Health at the Gill Heart Institute. "But we still have a lot of work to do, especially with women, whose symptoms can be different than men's.”