Risk factor for senile dementia – blood type?
The fourth blood type was associated with an increased risk of dementia
Copper news based on ScienceDaily: Can your blood type affect your memory in later years?
American scientists have found that people with the fourth blood group are much more likely to have memory problems in old age than people with any other blood group. The results of the study were published in the journal Neurology (Alexander et al., ABO blood type, factor VIII, and incident cognitive impairment in the REGARDS cohort).
Blood groups are determined by the presence of certain antigens in the erythrocyte membrane. The fourth blood type (AB) is the least common and occurs in about 4% of the world's population. As previous studies have shown, people with the first blood group have a reduced risk of developing cardiovascular diseases, which increase the likelihood of memory problems and the development of dementia.
Scientists from the Medical College at the University of Vermont have observed the health status of more than 30 thousand people for 3.5 years. The data of 495 people who showed signs of memory impairment and cognitive impairment after the start of the study were compared with the data of 587 people who did not have such problems.
According to the analysis, people with blood type AB were 82% more likely to develop problems with memory and thinking than people with another blood group.
The scientists also studied the level of coagulation factor VIII in the blood of the study participants. As it turned out, this indicator was highest in people with the fourth blood group. High levels of this protein were associated with an increased risk of cognitive impairment and intellectual disorders. Thus, in people with elevated levels of this factor, the propensity to develop cognitive impairment was 24% higher compared to those with lower levels of coagulation factor VIII.
"It is known that factors such as high blood pressure, high cholesterol and diabetes increase the risk of cognitive impairment and dementia," said Mary Cushman, the lead author of the study. – Blood type is also associated with the development of vascular diseases, for example, with the occurrence of stroke. Now it is necessary to conduct additional studies to confirm the results we have obtained."
Portal "Eternal youth" http://vechnayamolodost.ru12.09.2014