Suzi Gage: How robust is observational data assessing associations between breastfeeding and health? A 2008 study came up with a novel way to try and find out
Eliane Glaser: Paying working-class women to breastfeed doesn’t address the reasons for their choice, or the economic factors that are really driving inequality
Doctor and New Yorker writer Atul Gawande argues that we should focus less on prolonging life and more on making it meaningful, writes Geraldine Bedell
Dr Luisa Dillner: Vaccines are, on the whole, extremely good things. But – despite government support for this one – the evidence for giving it is not as strong as it should be