What are some reasons that an adult might not meet his or her nutritional needs?

An adult might not meet their nutritional needs due to a variety of factors, such as busy lifestyles that lead to poor meal planning or reliance on convenience foods that lack essential nutrients. Financial constraints can limit access to healthy foods, while certain medical conditions or medications may affect appetite or nutrient absorption. Additionally, lack of nutrition knowledge or awareness can result in unbalanced diets that fail to provide necessary vitamins and minerals.