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Dental hygiene (looking [after / before] your teeth and gums) is good for you. It [keeps / gives] your teeth healthy, and it can help your brain. New research from the University of South Carolina suggests that flossing your teeth could reduce the [risky / risk] of having a stroke. A stroke is like a heart [attacked / attack] , but it affects the brain. It [happens / happening] when blood cannot get to the brain, or when a blood vessel [at / in] the brain bursts. Around 15 million people worldwide have a stroke [all / each] year. Of these, about 5 million die, and 5 million are [left / right] disabled. Researcher Dr Souvik Sen said oral diseases, such as tooth decay and gum disease, [effect / affect] around 3.5 billion people. He said [them / these] diseases are the most widespread health problems.

Dr Sen and his team of [researcher / researchers] looked into the effects of flossing [on / in] our health. He said: "We aimed to determine which [aural / oral] hygiene behavior - dental flossing, brushing or [regularly / regular] dentist visits - has the [greatest / best] impact on stroke prevention." The team found that flossing teeth at least [once / one] a week could lower the risk of different types of stroke by 22 per cent to 44 per cent. Dr Sen said flossing could reduce the risk of stroke "[of / by] reducing oral infections". He added that flossing was a [cheap / cheaply] and easy way of caring for your teeth and body. He said: "Many people have said that dental care is [cost / costly] . Flossing is a healthy habit that [is / are] easy, affordable and accessible."