Vaccine claims, Alzheimer's treatment and Tim's Parkrun times - a podcast by BBC Radio 4

John Campbell, a YouTuber whose posts get millions of views, has made claims about excess deaths and the Covid vaccine. We show why he's incorrect. Also will a much-vaunted new treatment for Alzheimer's really change lives and how much longer can Tim expect his Parkrun times to improve? We look at the trends – and the rest of the team’s times.

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