Researchers from The George Institute for Global Health assessed the health benefits of switching the salt supply to potassium-enriched salt across 193 countries. They found almost 3 million deaths and 10 million new cases of cardiovascular and kidney disease could be prevented globally each year. The research is published in Nature Health.

People with type 2 diabetes, heart disease or stroke who sleep well have better cognitive function and greater brain volume than people with the same conditions who sleep poorly, according to a new study from Karolinska Institutet. The researchers believe that good sleep may help counteract the negative effects on the brain associated with these conditions.

In a study in Child and Adolescent Mental Health, researchers found that online communication with friends was associated with adolescents’ mental well-being, but patterns varied by both frequency of communication and the type of friendship.

A multicomponent nutritional supplement has been found to improve markers of vascular health in a randomized controlled trial led by the University of Surrey. The formulation combined ingredients (vitamins, minerals, amino acids and plant-derived bioactives) selected for their relevance to several biological processes associated with aging.

A large national study analyzing emergency department visits and hospitalizations related to alcohol or cannabis use across the U.S. has found diverging age patterns: Among people who presented to the hospital for a substance-related problem, cannabis was involved in the majority of visits by adolescents and young adults, while alcohol predominated among older adults.