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Major changes occurring with aging.
| Physiological | Pathological | Psychosocial |
|---|---|---|
| Digestive system | Diseases | Depression |
| Hormonal | Medications | Financial status |
| ↓ taste and smell | Neurological disorders | Anxiety |
| ↑ energy expenditure | Swallowing problems | Sleep disorders |
| Early satiety | Poor dentition | ↓ Ability to shop or prepare meals |
| Cytokines | Poor mobility | Loneliness |
| Xerostomia |
↓ = decreased, ↑ = increased.
