Poor intake of food raises the risk of disease and bad sleep has an impact on nutrition. According to the National Sleep Foundation, a sleep length of 7-9 hours for adults (26-64 years old) and 7-8 hours for older individuals (65 years old) is required for optimal health, but a duration of 6 hours for adults and 5-6 hours for older adults is insufficient. In the context of chronic diseases, sleep duration has also been studied. Short sleep has been linked to hypertension, type 2 diabetes, cardiovascular disease, and all-cause mortality, regardless of weight, probably due to changes in metabolic indicators that predispose people to cardio metabolic disorders. Short sleepers (5-6 hours) had higher absolute protein, carbohydrate, sugar, and total fat intake but lower dietary fibre intake than regular sleepers (7-8 hours), and extremely short sleepers (less than 5 hours) had lower protein, carbohydrate, sugar, dietary fibre, and total fat intake than normal sleepers.
