>2. The link between psychedelic use and serious, problematic visual disturbances or psychiatric issues is not well established at all, and modern evidence call

>2. The link between psychedelic use and serious, problematic visual disturbances or psychiatric issues is not well established at all, and modern evidence calls into question[1]. You are misinterpreting this. This is saying there's no link between psychedelic use and increased cases of psychosis. That isn't the same as debilitating HPPD, or any depression/anxiety caused as a result. In fact in that same article he highlights this; >But he has concerns about Krebs and Johansen’s overall conclusions, he says, because individual cases of adverse effects use can and do occur. >For example, people may develop hallucinogen persisting perception disorder (HPPD), a ‘trip’ that never seems to end, involving incessant distortions in the visual field, shimmering lights and coloured dots. “I’ve seen a number of people with these symptoms following a psychedelic experience, and it can be a very serious condition,” says Grob.