Biologically Older People Saw More Small Brain Vessel Damage
Graded Moderate — over 3,000 adults were followed for almost five years with two brain scans; as an observational study it shows a link, not a cause.
- Design
- Prospective cohort study
- Participants
- 3,050
- Duration
- 4.7 years
- Funding
- —
People who were biologically older by routine measures more often developed new small cavities and tiny bleeds in the brain.
Routine clinical measurements can be turned into a biological age. It mostly reflects how much strain the blood vessels and metabolism are under. People who came out older than their birth date had more damage to the brain's small blood vessels. That damage was also more likely to grow over almost five years. Small vessel disease is a major cause of dementia and stroke.
Researchers scanned the brains of 3,050 adults from the general population, aged 61 on average. Of them, 2,662 returned for a second scan after a median of 4.7 years. Biological age was calculated with three established methods. Two of them told the same story: biologically older people more often developed new lacunes, small cavities in brain tissue, and new tiny bleeds. Bright spots in the brain's nerve pathways did not clearly grow more often. The third method found no link.
The study only observed people. It cannot show that a younger biological age protects brain vessels. The authors see it as a possible tool to spot people at higher risk. Longer studies in more diverse groups still need to confirm this.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.