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| Type of change | Description | Number of changes |
|---|---|---|
| Molecular | Changes with age of a molecular nature, most being gene-centric | 3071 (2599 genes) |
| Physiological | All non-molecular physiological ageing changes | 343 |
| Psychological | Cognitive and behaviour changes with age | 17 |
| Pathological | Changes in disease incidence or mortality for age-related diseases | 95 |
