Micronutrients for example, vitamins A, C, D, E and zinc have several functions throughout the immune system. A large body of research shows that nutrient inadequacies can impair immune function and weaken the immune response.

A new article published in Nutrients aimed to present a new analysis of micronutrient usual intake estimates based on nationally representative data in 26 282 adults (>19 years) from the 2005-2016 National Health and Nutrition Examination Surveys (NHANES).

It was observed that the prevalence of inadequacy (% of population below estimated average requirement [EAR])—in four out of five key immune nutrients—is substantial. Specifically, 45% of the U.S. population had a prevalence of inadequacy for vitamin A; 46% for vitamin C; 95% for vitamin D; 84% for vitamin E; and 15% for zinc. Dietary supplements can help address nutrient inadequacy for these immune-support nutrients –which was demonstrated by a lower prevalence of individuals below the EAR.

Thus, it was recommended to adopt guidelines to ensure an adequate intake of these micronutrients.

Source: Nutrients. 2020 Jun 10;12(6):1735.doi: 10.3390/nu12061735.