Associations of Obesity, Vitamin D, Adjusted Total Calcium, and Parathyroid Hormone in US from NHANES

Document Type

Article

Publication Date

7-1-2025

Publication Title

Hormone and metabolic research

Abstract

Evidence for obesity and vitamin D deficiency as components of a data phenotype for primary hyperparathyroidism (pHPT) is critical to understanding primary hyperparathyroidism. This study examined the association between vitamin D, body mass index (BMI), albumin total calcium, parathyroid hormone (PTH) and data from National Health and Nutrition Examination Survey (NHANES). Associations of 25-hydroxyvitamin D, albumin adjusted calcium, and BMI with elevated PTH were evaluated, with elevated PTH being defined as>9.02 pmol/l. Outcomes were PTH (pmol/l), 25-hydroxyvitamin D (nmol/l), albumin adjusted calcium (mmol/l), and BMI. A weighted multivariable logistic regression model estimated the associations. A total of 9740 survey respondents were included in the study, 3.5% had elevated PTH. Mean vitamin D level was 57.7 (SD=22.6) nmol/l and BMI was 28.6 (SD=6.5) kg/m2. A one unit increase in BMI was associated with higher odds of elevated PTH [adjusted odds ratio (aOR)=1.04; 95% confidence interval (CI): 1.02, 1.06] whereas a one unit increase in vitamin D (aOR=0.97; 95% CI: 0.96, 0.98) or calcium (aOR=0.51; 95% CI: 0.29, 0.89) had decreased odds of elevated PTH. Higher BMI and lower levels of 25-hydroxyvitamin D are components of the primary hyperparathyroidism data phenotype. A refined data phenotype may improve detection/management of pHPT.

Medical Subject Headings

Humans; Parathyroid Hormone/blood; Vitamin D/blood/analogs & derivatives; Obesity/blood/epidemiology; Nutrition Surveys; Female; Male; Calcium/blood; United States/epidemiology; Middle Aged; Body Mass Index; Adult; Aged; Vitamin D Deficiency/blood

PubMed ID

40578598

ePublication

ePub ahead of print

Volume

57

Issue

7

First Page

409

Last Page

415

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