Author(s)

Liang Li, Xuanzhuang Lu

Corresponding Author

Liang Li

ABSTRACT

Obesity as a growing public health threat, is associated with low micronutrient intake. It is important to explore the relationship between the two for updated dietary recommendations. This study aims at exploring the association between BMI and micronutrient intake levels by analyzing a nationally representative sample of US adults aged 20 or elder from the National Health and Nutrition Examination Survey (NHANES) 2015-2018. With linear and nonlinear regression as well as model optimization, results have indicated that a higher BMI is associated with more intake of sodium and magnesium, and conversely with lower intake of total beta-carotene, folate, vitamin C, vitamin D and vitamin E. These findings help to update the current relationship between micronutrient intake and BMI and highlight the specific micronutrient, directly helping to improve existing dietary intake recommendations for U.S. adults.

KEYWORDS

BMI, micronutrient, NHANES