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Nutrición Hospitalaria

versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611

Resumen

BENTO, Claudia; MATOS, Andréa C; CORDEIRO, Adryana  y  RAMALHO, Andréa. Vitamin A deficiency is associated with body mass index and body adiposity in women with recommended intake of vitamin A. Nutr. Hosp. [online]. 2018, vol.35, n.5, pp.1072-1078.  Epub 20-Ene-2020. ISSN 1699-5198.  http://dx.doi.org/10.20960/nh.1630.

Introduction:

evidence indicates that vitamin A is involved in regulating fat mass. A low consumption of vitamin A has been reported in individuals with obesity, as have lower concentrations of this vitamin, than in eutrophic individuals when their dietary intake of vitamin A is not significantly different.

Objective:

to investigate vitamin A nutritional status and its association with body mass index (BMI) and body fat in women who have the recommended dietary intake of vitamin A.

Methods:

cross-sectional study with 200 women, paired by age and by the dietary intake of vitamin A recommended. Participants were divided into four groups, according to BMI. Anthropometric data were evaluated (weight, BMI and waist circumference [WC]), as well as the diagnosis of night blindness (NB). Lipid and glycemic profiles were measured. The cut-off points for deficiency of serum concentrations of retinol and β-carotene were < 1.05 µmol/l and 40 µg/dl, respectively. The recommended dietary intake of vitamin A was 700 µg/day.

Results:

there was a significant drop in retinol concentrations according to BMI (p < 0.001) and WC (p < 0.001). We found β-carotene to behave similarly (p = 0.005; p < 0.001). We found NB in 7.5% of overweight (OW) cases and 20.0% of obesity class II (OII), and no functional alteration was found in the eutrophic group (EU). Inadequate levels of retinol and β-carotene increased the odds ratio for the occurrence of OW, obesity class I (OI) and OII, as well as inadequate WC.

Conclusion:

even with recommended intake of vitamin A, we found a biochemical and functional inadequacy of vitamin A nutritional status, associated with overweight, obesity and body adiposity.

Palabras clave : Overweight; Obesity; Retinol; ß-carotene; Night blindness; Body adiposity.

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