A disease is a particular abnormal condition that negatively affects the structure or function of part or all of an organism, and that is not due to any immediate external injury.

Diseases are often known to be medical conditions that are associated with specific symptoms and signs.

Health conditions, like illnesses, injuries and impairments, affect our ability to function or enjoy life. Many of them are related to food and nutrition – from food allergies and intolerances, over dental and gut health, to the non-communicable diseases, like diabetes, cancers, cardiovascular, and respiratory diseases.