How long does it take for an elderly person to become malnourished?

The time it takes for an elderly person to become malnourished can vary widely based on factors such as their overall health, dietary habits, and existing medical conditions. Generally, malnutrition can develop over a few weeks to months if there is a significant and sustained decrease in nutrient intake. Additionally, conditions like chronic illness, dental problems, or social isolation can accelerate this process. Regular monitoring and intervention are crucial to prevent malnutrition in the elderly.