Cell division sustains gut–vascular damage

Age-related damage may cycle between the gut and blood vessels; this hypothesis asks whether briefly pausing repair could break the loop. After injury, stromal cells, supporting cells around blood vessels, divide to repair tissue. The model proposes that DNA copying during repair may cause stress and cell death, feeding damage. To test it, researchers would reversibly stop division in recipient stromal cells for one cycle, then restore it under the burden. Suppressed later damage would support the loop. If damage persists during a confirmed pause but stops when lipid oxidation or mineral particles are suppressed, rivals fit better. Testing requires linked cultures and lineage tracing.