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New York – Diets that are high in saturated fat and sugar and low in fiber may contribute to sleep that’s lighter, more disrupted and less restorative to health, according to researchers at Columbia University.

Los Angeles – People younger than 45 may take stroke symptoms lightly and postpone going to a hospital for treatment, according to the results of a survey from Ronald Reagan UCLA Medical Center.

Research Triangle Park, NC – It’s a case of good news, bad news for people who wear activity trackers on their wrists.

Pittsburgh – Nearly half of all concussions among youth hockey players are caused by illegal contact, according to a new study from the University of Pittsburgh Medical Center’s Sports Medicine Concussion Program.

Iowa City, IA – Children with attention deficit hyperactivity disorder exhibit “impulsivity” and attention issues that put them at risk when crossing streets on their bikes, according to a study from the University of Iowa.

Washington – American diets should have a variety of nutrient-rich foods across all food groups while limiting the amount of calories from added sugars, certain fats and sodium, according to updated nutritional guidelines released Jan. 7 by the Departments of Health and Human Services and Agriculture.

Birmingham, AL – People who skip sleep in favor of watching TV may find themselves eating and drinking more – possibly putting them at risk of obesity, according to a new study from the University of Alabama at Birmingham.

Washington – The Food and Drug Administration has proposed two rules intended to minimize the risks of skin cancer presented by indoor tanning beds.

Jacksonville, FL – Participating in contact sports as a youth or young adult may lead to brain damage, according to a study from Mayo Clinic’s Florida campus.

Aurora, CO – High school cheerleaders are known for being prominent on the sidelines, but a new study puts their sports-related injuries front and center.