Table 1. Nutrition/Energy Factors
| Mechanisms | Causes |
| Altered ability to process nutrients | Impaired glucose, lipid, and protein metabolism |
| Increased energy requirements | Tumor consumption of and competition for nutrients |
| Hypermetabolic state due to tumor growth | |
| Infection/fever | |
| Dyspnea | |
| Decreased intake of energy sources | Anorexia |
| Nausea/vomiting | |
| Diarrhea | |
| Bowel obstruction |
