A new study shows that people today have more gum disease than people living 2,000 years ago. The study is at away back between by down from in of out over up with the university King's College at away back between by down from in of out over up with London and is published at away back between by down from in of out over up with the 'British Dental Journal'. Researchers looked at away back between by down from in of out over up with the teeth in the skulls at away back between by down from in of out over up with 303 people who lived at away back between by down from in of out over up with 200-400 AD (2,200-2,400 years ago). The skulls were found at an old burial site in the west at away back between by down from in of out over up with England. The researchers found that only 5 per cent at away back between by down from in of out over up with the skulls showed signs of gum disease. Up to 30 per cent of people in England today have gum disease. Professor Francis Hughes was surprised at away back between by down from in of out over up with what he found. He said people did not have toothbrushes or toothpaste at away back between by down from in of out over up with then and did not visit dentists, like we do today. The main reason why modern people have more gum disease is smoking. Theya Molleson, co-author at away back between by down from in of out over up with the report, said the study shows that people's oral health has become much worse at away back between by down from in of out over up with the past 2,000 years. She added that she thinks gum disease could start going at away back between by down from in of out over up with from now as more people stop smoking. She said: "As smoking declines at away back between by down from in of out over up with the population, we should see a decline at away back between by down from in of out over up with the [numbers at away back between by down from in of out over up with people at away back between by down from in of out over up with ] the disease." Gum disease happens when bacteria build at away back between by down from in of out over up with in your mouth. The bacteria eat at away back between by down from in of out over up with at your gums and can make your teeth fall at away back between by down from in of out over up with . People can reduce the risk of gum disease at away back between by down from in of out over up with regular brushing, using mouthwash and not smoking.