The study, published in the journal Neurology shows , they are too much sugar in the blood tend to have memory problems . In this study , researchers recruited 141 respondents with an average age of 63 years .
The respondent is not known to suffer from diabetes or pre - diabetes . Those who are overweight , excessive alcohol consumption , and have memory and thinking problems are not included in the research .
In this test respondents were asked to remember a list of 15 words after the 30 -minute hearing . Respondents tested memory skills along with an examination of blood sugar levels . Respondents also underwent brain scans to see how much network owned hippocampus .
As a result, respondents were less sugar in the blood tend to have better grades in tests of memory . While respondents who had higher blood sugar levels result in a worse value . In a research note also an increase of about 7 mmol / mol marker of long-term glucose control called HbA1c , along with the recall of more than two words .
"The results suggest for lowering blood sugar levels , including in those with normal blood sugar . It is better to prevent memory problems and cognitive decline as they get old , " said the researcher , Dr. Agnes Floel from Charite University Hospital , Berlin .
The next strategy , Floel said , is to increase physical activity . However , the strategy of lowering blood sugar and increased physical activity still requires further testing .
According to the communications manager of the Alzheimer 's Society , Dr Clare Walton , now it is known that type 2 diabetes is a risk factor for Alzheimer's disease . However , given the poor ability was not only possessed person with Type 2 diabetes .
"The high blood sugar levels are also associated with poor memory skills in people who do not have diabetes . This research is certainly still require further evidence . Moreover, one in three people aged over 65 will have dementia , " said Walton .
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