Says the American Society for Nutrition, most people think their diet is healthier than it actually is. Examples of foods ranked as healthy include fruits and vegetables, whole grains, healthy fats, lower-fat dairy products, seafood and plant proteins. Foods considered less healthy include refined grains and foods high in sodium, added sugars or saturated fats. In a survey, out of over 9,700 participants, about 8,000 (roughly 85%) inaccurately assessed their diet quality. Of those, almost all (99%) overrated the healthfulness of their diet. Further research could help to find what factors people consider when asked to assess their diet quality. For instance, it would be helpful to know whether people are aware of particular dietary recommendations and whether they take into consideration where their food is purchased or how it is prepared.