Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.

Find out how to listen to other BBC stations

Episode details

Radio 4,1 min

Is severe morning sickness a sign of twins?

More or Less

Available for over a year

In light of the Royal pregnancy, Tim Harford asks what severe morning sickness tells us about the chances of having twins. Yan Wong helps him look at the figures.

Programme Website
More episodes