24 May 2023

Assessment of vitamin D levels in women with grade II/III obesity

This study evaluated the incidence of vitamin D insufficiency and indicators related to serum vitamin D levels in adult women with grade II/III obesity.

The DieTBra study analyzed baseline data from 128 adult women with grade II/III obesity, defined as a body mass index (BMI) ≥35 kg/m2. Multiple linear regression was used to examine data on body tissue composition, medications, disease, menopause, dietary calcium and vitamin D intake, lifestyle, sun exposure, sunscreens, and sociodemographic data.

A total of 128 women with a mean age of 45.53 ± 6.36 years, a mean BMI of 39.7 ± 8.75 kg/m2 and a serum vitamin D level of 30.02 ng/mL ± 9.80 were studied. Vitamin D insufficiency was 14.01%. Serum vitamin D levels did not correlate with waist circumference, total body fat, percent body fat, or BMI.
Multiple linear regression included data on hypolipidemic medications, menopause, BMI, insufficient calcium intake, use of sunscreen cosmetics, daily sun exposure, and age group. Severely obese women 40 years and older with inadequate dietary calcium intake are more likely to be vitamin D deficient. The following factors continue to be associated with low serum vitamin D levels: inadequate calcium intake; age ≥50 years; and age 40-49 years.

In women with grade II/III obesity, the prevalence of vitamin D deficiency was lower than expected. An association between body tissue composition, lifestyle, and sun exposure was not established. Low serum vitamin D levels were significantly correlated with age over 40 years and inadequate calcium intake.

Source: https://www.sciencedirect.com/science/article/pii/S2405457723000608
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