Rochester: Dosing obese teens with vitamin D shows no benefits for their heart health or diabetes risk, and could have the unintended consequences of increasing cholesterol and fat-storing triglycerides. These are the latest findings in a series of Mayo Clinic studies in childhood obesity.

Columbus: Researchers have discovered a way to trigger a preventive response to a flu infection without any help from the usual players – the virus itself or interferon, a powerful infection fighter.

Hamilton: A study led by researchers at McMaster University has found that that trans fats are associated with greater risk of death and coronary heart disease, but saturated fats are not associated with an increased risk of death, heart disease, stroke, or Type 2 diabetes.

New York: A diet high in refined carbohydrates may lead to an increased risk for new-onset depression in postmenopausal women, according to a study published in The American Journal of Clinical Nutrition.

Toronto: Hearing loss in adults is under treated despite evidence that hearing aid technology can significantly lessen depression and anxiety and improve cognitive functioning, according to a presentation at the American Psychological Association’s 123rd Annual Convention.

Toronto: In an effort to build better bodies, more men are turning not to illegal anabolic steroids, but to legal over-the-counter bodybuilding supplements to the point where it may qualify as an emerging eating disorder, according to research presented at the American Psychological Association’s annual convention.