Chemicals commonly found in food packaging, upholstery and carpets may be damaging women’s fertility, say US scientists.

A study published in the journal Human Reproduction measured levels of perfluorinated chemicals (PFCs) in the blood of 1,240 women.

Those with higher levels were more likely to take longer to become pregnant.

UK experts said more research was needed to confirm a link.

PFCs are useful in industry because they are resistant to heat, and have the ability to repel water and oil.

However, high concentrations have been linked to organ damage in animals, and the chemicals have the ability to persist for long periods in the body.

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