Playgroups 'cut leukaemia risk'
Children who attend daycare or playgroups cut their risk of the most common type of childhood leukaemia by around 30%, a study estimates. Researchers reviewed 14 studies involving nearly 20,000 children, of which 6,000 developed acute lymphoblastic leukaemia (ALL). It is thought early infections may help the body fight off the disease. The University of California, Berkeley study will be presented to a leukaemia conference in London.