There may be a significant association between the consumption of vitamin D by pregnant women and the size of their children, say scientists at McGill University, in Montreal. They believe too little vitamin D may cause babies to be smaller than they might otherwise be, and say although the association is weak it should be investigated further. Dr Kristine Koski, director of the school of dietetics and human nutrition at the university, and colleagues, make their remarks in the Canadian Medical Association Journal. They found that the study subjects – in a group of women attending ante-natal classes – who reported drinking the least milk gave birth to infants weighing less than those whose mothers consumed more. The study was funded by the Dairy Farmers of Canada and the province of Quebec.