Washington: Teenagers, particularly boys, who try to kill themselves or are close with someone who attempted suicide could face a higher rate of risk factors for heart disease in their twenties, according to research published by the American Psychological Association.

Washington: Researchers have developed an integrated, wearable system that monitors a user’s environment, heart rate and other physical attributes with the goal of predicting and preventing asthma attacks. The researchers plan to begin testing the system on a larger subject population this summer.

Washington: When new AIDS virus particles bud from an infected cell, an enzyme named protease activates to help the viruses mature and infect more cells. That’s why modern AIDS drugs control the disease by inhibiting protease.

Toronto: Artificial sweeteners help individuals with obesity to cut calories and lose weight but may have negative health effects, according to researchers at York University's Faculty of Health.

Hamilton: A large worldwide study has found that, contrary to popular thought, low-salt diets may not be beneficial and may actually increase the risk of cardiovascular disease and death compared to average salt consumption.

Birmingham: New research from the University of Birmingham has shown that flu vaccinations are more effective when administered in the morning.