Lifestyle changes can prevent a third of cases of dementia.

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Lifestyle changes can prevent a third of cases of dementia.

Hearing loss in middle age can reduce dementia by 9%.

More than a third of the world’s dementia cases can be prevented by addressing lifestyle factors that increase the risk of cognitive breakdown in later life. According to the report of the expert committee established by the lancet, these factors include poor education, hearing loss and smoking.

The report, published Thursday at the international conference of the alzheimer’s disease association in London, was the first to quantify “a report of potentially changing risk factors from childhood to alzheimer’s disease.”

The biggest and most surprising of the nine is the middle-aged hearing loss, which reduces the number of people with dementia by 9 percent if they are treated before hearing loss.

At University College London (University College London), a professor of psychiatry at gil Livingston (Gill Livingston) said: “although alzheimer’s disease is diagnosed in his old age, usually within a few years ago but the changes in the brain development, and the disease occurs in the whole process of life, not just in old age. The 24-member committee.

“We think that reflects the changes of risk factors of a broader way to prevent dementia will be beneficial to our aging society, and help prevent worldwide, the rising number of cases of alzheimer’s.”

If everyone stays at school until the age of 15, the global burden of dementia will fall by 8%, it is reported. As the brain strengthens its network, education is thought to create a “cognitive reserve” that increases resilience in later life.

Partial or complete deafness has only recently emerged as an important risk factor. Wisconsin, a study of 783 with a family history of alzheimer’s disease, the researchers of the latest research results show that those who have a hearing loss from the normal cognitive development for the possibility of mild cognitive dysfunction is three times of the early symptoms of alzheimer’s disease. Therefore, the causes and results are difficult to separate.

Good listening enables people to experience a rich cognitive environment and helps to avoid social isolation. But the lancet study is in its infancy, and it is not clear to what extent hearing AIDS can counteract the cognitive damage caused by deafness.

The lancet study found several other risk factors, including unhealthy eating, drinking, poor sleep, air pollution and loss of vision.

Prevention of these additional factors will increase the proportion of avoidable dementia cases to more than 35 percent, said Clive Ballard, a professor of age-related diseases at Exeter university. But some of these risks are far easier than others.

“I think the biggest interventions will be more effective in treating hypertension (hypertension) and reducing obesity levels,” said professor ballard.

Professor livingston added: “although the public health interventions cannot prevent or cure all the possible change of dementia, but for cardiovascular risk factors, psychological health and the intervention may lead to a lot of people for many years. “If dementia is delayed for five years, the rate of dementia may be halved.”

Known to have dozens of genes that affect a person with alzheimer’s disease susceptibility – in this week’s meeting found three new genes – but scientists have not enough information to reliable estimates of genetic and environmental risk and the overall contribution of lifestyle. The most important gene for alzheimer’s disease is ApoE4, which accounts for 7% of the total risk.

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