Air pollution increases risk of miscarriage, new study suggests

Pregnant women face a higher risk of miscarriage if they are exposed to elevated levels of a type of air pollution, a study suggests.

Expectant mothers exposed to higher levels of nitrogen dioxide, a gas created by petrol and diesel vehicles, are 16% more likely to lose their baby.

One researcher at the University of Utah, which led the research, described the findings as "upsetting".

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