A healthy diet in its conversational context means a diet which provides proper nutrition and avoids toxic materials and junk food content. The conversational idiom is usually based on the issues of consumer foods. In a professional context, a healthy diet is a diet managed to meet the requirements of the individual, providing supplements in areas of deficiency and ensuring food quality. Healthy managed diets are based on actual testing of the individual, identifying dietary issues relating to that person's state of health, and targeting particular problems.