Malnutrition in older adults can lead to fatigue and increase the risk of digestive, lung and heart problems. Malnourished seniors are at increased risk of death. Malnutrition weakens the immune system, increasing the risk of pneumonia and other serious infections.
It can worsen existing health conditions and mental confusion. Over time, poor nutrition can lead to a low red blood cell count (anemia) and muscle weakness leading to falls and fractures. Poor nutrition can also cause blood clots, bed sores, and depression and other senior health problems.