A new large study supports the hypothesis that nicotine protects against COVID-19. But smokers lose protection when nicotine intake stops - in the hospital!
Young people who have tried e-cigarettes or smoke are more likely than average to be tested for Covid-19. This is according to a criticised study from the US.
Unclear research leads to unnecessary concern for road users in times of coronavirus. Professor Linda Bauld and researcher Louise Adermark review what we know - and don't know.