The Claim
In patients with progressive supranuclear palsy and corticobasal syndrome, elevated HbA1c levels are associated with reduced scores on the orientation subitem of the Montreal Cognitive Assessment, indicating that long-term glucose exposure is linked to impaired temporal orientation.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In people with progressive supranuclear palsy or corticobasal syndrome, higher long-term blood sugar levels are linked to worse performance on tests of temporal orientation.
See the scientific wording
In patients with progressive supranuclear palsy and corticobasal syndrome, higher HbA1c levels are associated with worse performance on the orientation subitem of the Montreal Cognitive Assessment, suggesting that long-term glucose exposure may specifically affect temporal orientation.
High blood sugar over time damages blood vessels in the brain region that handles time and memory, causing that area to shrink. At the same time, the brain's ability to use insulin properly declines, which reduces protection for nerve cells and disrupts the chemicals they use to communicate. This combination leads to trouble knowing the date or time.
What the research says
1 studyIn people with these rare brain diseases, higher average blood sugar levels (measured by HbA1c) were linked to worse performance on questions about the date and time in a memory test. The study found this connection even after accounting for age and sex.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.