The Guidelines recommend diets that are nutritionally insufficient
The 2015 DGA expert report recommends diets that are nutritionally insufficient:
“The nutrients for which adequacy goals are not met in almost all [recommended dietary patterns] are potassium, vitamin D, vitamin E, and choline.” — Scientific Report of the 2015 Dietary Guidelines Advisory Committee, (Part D, Ch 1, p. 22, lines 827-828)(Appendix E-3.1, Text and Figure 4).
The report notes that “underconsumption of the essential nutrients vitamin D, calcium, potassium” are “public health concerns for the majority of the U.S. population” — yet the foods recommended by the DGAs don’t solve this problem.
To meet sufficiency for iron and folate, the DGAs recommend three to five servings a day of fortified, refined grains (such as breakfast cereals).
Yet it’s not clear that nutrients from fortified foods are as “bioavailable”
- The bioavailability of iron from fortified whole grains may be minimal. (see studies here, and here).
- Folic acid from fortified foods may not be well absorbed.
For more information, see the nutritional sufficiency analysis of the DGAs here.
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