covid-19November 15, 2020 Marijuana studies showed risk for heart patients, unexpected protection for kidneys Seemingly contradictory findings show why more research into the effects of cannabis on the heart and the rest of the body is needed. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…