Sarcopenia, malnutrition and nutrient density in older people.

Both sarcopenia and malnutrition can have a significant impact on health and functional status in older people. Good nutrition and physical activity throughout life are protective factors. In addition to inadequate nutrient intake, reduced physical activity is known to increase the risk of developing sarcopenia. Progressive resistance training has been shown to be an effective intervention and there is also significant potential for whole diet interventions, many of which are also effective in treating malnutrition.