The struggle to tame wrinkles is an age-old conflict, with people using any number of lotions, creams and treatments to try and smooth their skin. Now, researchers say they know exactly why skin wrinkles. “This is no longer just a theory,” senior researcher Guy German, an associate professor of biomedical engineering at Binghamton University in…  read on >  read on >

Apparently healthy endurance athletes could have scar tissue building up in their heart, increasing their risk of dangerous abnormal heart rhythms, a new study says. About half of a large group of middle-aged male cyclists and triathletes showed signs of scarring in their heart’s left ventricle, the lower chamber responsible for pumping oxygenated blood out…  read on >  read on >

Care about your kid’s well being? Then best not give them a smartphone until they’re a full-fledged teenager, a major new study says. Kids given a smartphone when they were younger than 13 tend to have poorer mental health and well-being, researchers report in the Journal of Human Development and Capabilities. Specifically, people between 18…  read on >  read on >

A seven-second head start for pedestrians can save lives and prevent injuries at busy intersections, a new study says. Pedestrian-related injuries dropped by 33% at crosswalks where New York City rejiggered traffic lights to give walkers those extra seven seconds, researchers report in the journal Nature Cities. The most dramatic impact came during the day,…  read on >  read on >

Adults who are consistently physically active have an overall lower risk of premature death, even if they pick up the habit later, a new evidence review says. People who get regular exercise are 30% to 40% less likely to suffer an early death from any cause, researchers reported July 10 in the British Journal of…  read on >  read on >