Association of serum parathyroid hormone within normal range with the prevalence and prognosis among adults with diabetes and prediabetes: insight from NHANES 2003-2006 data.

BACKGROUND

Previous research has established a link between high blood levels of parathyroid hormone (PTH) levels and hyperglycemia, as well as early mortality. However, the extent of this relationship and the predictive value of PTH for mortality risk in hyperglycemic populations have been minimally explored.

METHODS

The National Health and Nutrition Examination Survey study conducted from 2003 to 2006 identified 932 adults with diabetes and 1645 adults with prediabetes. A weighted multivariate logistic regression analysis was utilized to examine the association between PTH levels and hyperglycemia. Furthermore, Cox proportional hazards regression models were employed to examine the correlation between PTH levels and both cardiovascular and overall mortality within the hyperglycemia cohort.

RESULTS

(1) The research findings revealed a negative association between PTH levels (per 10-pg/mL increase) and diabetes status (OR, 0.79; 95% confidence interval (CI), 0.73-0.86). (2) There was a significant correlation between the risk of all-cause mortality (hazard ratios (HR), 1.13; 95% CI, 1.01-1.29) and cardiovascular disease mortality (HR, 1.39; 95% CI, 1.05-1.84) among individuals with diabetes for every 10-pg/mL increase in PTH levels.

CONCLUSION

The current research shows that individuals with elevated PTH spectrum within the normal range are less likely to have diabetes, while those with higher PTH levels in adults with diabetes are linked to worse outcomes, particularly cardiovascular mortality.