Research conducted on Swedish twins numbering thousands has shown a link between blocked arteries and stroke risks and type-2 diabetes. However, no link was shown between brain bleeds, also known to cause strokes. Strokes occur when brain cells are deprived of oxygen.
Relationships between cerebrovascular disease and type 2 diabetes occurring in midlife were analyzed by researchers from China and Sweden. Family background and genetics were also analyzed. However, the latter was found to be non-linked. This study shows the importance of preventing midlife diabetes to prevent cerebral artery blockage.
Cerebrovascular diseases are of 2 types: hemorrhagic and ischemic. The latter cause most strokes.
Diabetes and strokes cause most deaths globally. Both cerebrovascular diseases and diabetes are complex lifestyle related and genetic disorders. Since twins share the same environments and genes, they were ideal subjects for the study. The researchers utilized SALT data available from the STR to test twins younger than 60 in 2014. Anyone with a prior history of strokes, ischemic attacks, diabetes, and cerebrovascular diseases was excluded.
The remaining individuals had their data tested to detect any patterns. They found who had, since then, developed diabetes or cerebrovascular diseases. Out of the group under testing, 3.8% developed diabetes and 9.4% developed cerebrovascular diseases. The former developed during 40-59 age ranges while the latter showed up after 60.This showed a connection between type-2 diabetes and brain artery blockage risks of up to 30% higher, which usually caused a stroke. Potential influencers and their effects were removed during the analysis.
Data from the twins were compared as well. Explanations for this phenomenon are unclear. It is thought that abnormal fat quantity in those having type 2 diabetes experience atherogenesis. Metabolic disruption could also have a hand in this, causing insulin resistance, inflammation fatty deposits, and greater blood sugar. It is suggested that these are the ways used to alter blood vessel lining.
However, there were 2 drawbacks, one being lack of sufficient twin pairs, where cerebrovascular diseases were developed. The other was uncertainty over whether they were non-identical or identical twins. Exercise and eating habits were also not factored in.