Avocado is classified as a functional food due to its high nutrient content and potential health benefits. According to definitions from reputable sources like the Oxford University Press, functional foods are those that have a positive effect on health beyond basic nutrition.
Avocados are rich in healthy fats, particularly monounsaturated fats, which are known to support heart health. They are also a good source of dietary fiber, vitamins (such as vitamin E, C, K, and several B vitamins), and minerals (including potassium). The presence of antioxidants and phytochemicals in avocados, such as carotenoids, contributes to their health-promoting properties, including potential benefits in reducing inflammation and improving cholesterol levels.
In summary, avocados are considered a functional food because they provide beneficial nutrients and bioactive compounds that can enhance overall health and reduce the risk of certain diseases.