A new study which contradicts all previous research discovered that being fat during middle ages could reduce the risk of developing dementia
According to the Lancet scientific journal, the new study, carried out on two million people, found that underweight men and women were more likely to develop dementia, which is a growing problem among the old people in the Western parts of world.
Scientists calculated a 34 percent higher risk of developing dementia for underweight people than for those of a normal weight. The very obese, on the other hand, had a 29 percent lower risk of becoming confused and experience memory loss and other signs of senility.
Dementia and obesity levels are soaring worldwide.
Researchers explained that if other studies will confirm the discoveries, the next step would be to determine what are the dementia-fighting nutrients in the extra food that overweight people consume.
The study was published in the Lancet Diabetes and Endocrinology Journal. Its results are a stern contradiction of previous smaller studies, negating the modern idea that what is good for the heart is also beneficial for the head.
Patients who participated in the study were an average 55 years old. A little more than 45,500 of them developed dementia over an average of nine years. The researchers found that the risk of dementia fell constantly as their weight rose.
of Oxon Epidemiology, who led the study, said the discoveries are valid despite efforts to adjust it for other causes of dementia, but also for the tendency to die earlier of obese people.
“We did a lot of analysis to see if we could explain it but it just seems to persist. We couldn’t get rid of it, so we’re left with this apparent protective effect,” said Nawab Qizilbash.
The co-author of the paper explained the findings suggested “that doctors and public health scientists need to re-think how to best identify who is at high risk of dementia.”
Stuart Pocock of the London School of Hygiene and Tropical Medicine mentioned: “If we can understand why people with a high body mass index have a reduced risk of dementia, it’s possible that further down the line, researchers might be able to use these insights to develop new treatments,”
On the other hand, Qizilbash warned that being overweight or obese brings a much higher risk of death. And the causes are almost numberless, he added.
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