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Boris Johnson is set to announce new measures to curb obesity next week, amid growing evidence people who are overweight or obese are at greater risk from coronavirus.

The UK has one of Europe’s highest obesity rates with 63% of adults in England in 2018 classed as overweight or obese.

New evidence tentatively suggests obesity is associated with an increased risk of Covid-19 complications and death. But why are those who are overweight or obese at greater risk?

Health Correspondent Deb Cohen reports.