Daycare protects against leukaemia


By Shaoni Bhattacharya THERE is no association between exposure to electromagnetic fields and the risk of childhood leukaemia. But infants who attend day care are much less likely to develop leukaemia than those who do not mix with other babies, a large study in the UK shows. The results suggest that early exposure to a range of infections has a protective effect, somehow teaching the immune system to respond to infections in an appropriate way. Without this training,
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