This assignment delves into the health challenges faced by older adults. It examines research papers focusing on the effects of impairments in instrumental activities of daily living and mild cognitive impairment on dementia development, the impact of behavioral and psychological symptoms of dementia on caregivers, and the role of functional status in severe Clostridium difficile infection. Additionally, it considers the effectiveness of fecal microbiota transplantation for treating severe Clostridium difficile infections in intensive care units.