DO pregnant women risk a miscarriage if they spend a lot of time exercising in public swimming pools? Â鶹´«Ã½ reported that a team at Imperial College, London, headed by Mark Nieuwenhuijsen, found these pools contained high levels of some by-products of chlorination that have been linked to miscarriage (13 April, p 17). I asked Yvette Cooper, the public health minister, what the Department of Health’s view is of this matter.
Cooper replied that the Imperial College study measured levels of four trihalomethanes (THMs), which included chloroform, in eight indoor swimming pools in London. It did not, however, attempt…
