Scientists at the UCSF-affiliated Gladstone Institutes announced a research breakthrough in mice that one day may help doctors restore hearts damaged by heart attacks — by converting scar-forming cardiac cells into beating heart muscle.

Half of young adult tobacco smokers also have smoked marijuana in the last 30 days, according to a recent Facebook-based survey conducted by UCSF researchers, indicating a greater prevalence of marijuana and tobacco co-use among smokers age 18-25 than previously reported.