Pregnant women are being advised to avoid chemicals in household products such as food packaging, cosmetics and family medicines that could cause harm to their unborn babies.
The Royal College of Obstetricians and Gynaecologists says women should be made aware of the sources of chemicals to minimise the possibility of harm during pregnancy.
It has urged them to "play it safe", despite uncertainty about chemicals' effects and the surrounding risks.
But the report's authors admit there is little evidence to suggest whether such chemicals do affect a baby's development, or even if there is a risk to health. However, they advise women to assume that a risk is present.
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