Advice has been isusued on how to whiten teeth naturally.

Brits looking to brighten their smile using natural methods might like to heed the advice of MSN Health.

The online publication noted there are a number of foods that are bad for the teeth and will in fact darken tooth enamel over time, as they attack the enamel causing it to erode, with orange juice being one of the worst offenders.

Furthermore, the website noted yoghurt eaters are less likely to suffer from gum disease, as the food contains healthy bacteria that help to displace harmful organisms within the mouth.

In addition, Brits are advised to drink through a straw, as this can help reduce the amount of time teeth are exposed to acids.

Elsewhere, the American Academy of Pediatric Dentistry recently advised anyone considering a teeth whitening treatment to weigh up all their options before going ahead with the procedure.

It warned there are a number of possible side effects, including increased tooth sensitivity, tissue irritation or possible root damage.