Perception of nutrient intake is often inaccurate.
There is a significant difference between what Americans believe about their nutrient intake and the nutrients they actually consume, according to the International Food Information Council's Functional Foods Consumer Survey, published online Oct. 2, 2013 in Supermarket News. For example, 68 percent of respondents perceived that they were getting enough vitamin D, but only 32 percent actually were. There also was a stark difference in the case of fiber--67 percent believed they were consuming the recommended amount, but just five percent actually met the recommendation. The survey also revealed gaps in knowledge and consumption of functional dietary components, such as omega-3 fatty acids.