Robert Page, a clinical pharmacist who specializes in heart disease at the University of Colorado Skaggs School of Pharmacy, is worried about the emerging connections between marijuana consumption and the heart. Page was the lead author of a comprehensive statement on cannabis released by the American Heart Association in 2020. “I think we’re beginning to see the same things we saw with smoking cigarettes back in the ’50s and ’60s — that this is a signal,” Page said. “I feel like we’re repeating history.”