Xinlei Chen1,2, Shuliang Deng1,3, Cecilia Sena4, Chuhan Zhou5, Vidhu V Thaker4. 1. Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, USA. 2. Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA. 3. Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA. 4. Department of Pediatrics, Columbia University Medical Center, New York, NY, USA. 5. Institute of Human Nutrition, Columbia University, New York, NY, USA.
Abstract
CONTEXT: Thyroid hormones play an important role in metabolic homeostasis, and higher levels have been associated with cardiometabolic risk. OBJECTIVE: To examine the association of cardiometabolic risk factors with TSH levels in US youth. METHODS: Cross-sectional study of youth aged 12 to 18 years without known thyroid abnormalities from 5 National Health and Nutrition Examination Survey cycles (n = 2818) representing 15.4 million US children. Subclinical hypothyroidism (SH) was defined as thyrotropin (TSH) levels of 4.5 to 10 mIU/L. Assessed cardiometabolic risk factors include abdominal obesity (waist circumference >90th percentile), hypertriglyceridemia (triglyceride ≥130 mg/dL), low high-density lipoprotein cholesterol (<40 mg/dL), elevated blood pressure (systolic and diastolic blood pressure ≥90th percentile), hyperglycemia (fasting blood glucose ≥100 mg/dL, or known diabetes), insulin resistance (homeostatic model for insulin resistance > 3.16), and elevated alanine transferase (≥ 50 for boys and ≥44 U/L for girls). Age and sex- specific percentiles for thyroid parameters were calculated. RESULTS: In this cohort of youth (51.3% male), 31.2% had overweight/obesity. The prevalence of SH was 2.0% (95% CI 1.2-3.1). The median TSH levels were higher in youth with overweight/obesity (P < 0.001). Adjusting for age, sex, race/ethnicity, and obesity, youth with TSH in the fourth quantile had higher odds of abdominal obesity (OR 2.53 [1.43-4.46], P = .002), insulin resistance (OR 2.82 [1.42-5.57], P = .003), and ≥2 cardiometabolic risk factors (CMRF) (OR 2.20 [1.23-3.95], P = .009). CONCLUSION: The prevalence of SH is low in US youth. The higher odds of insulin resistance and cardiometabolic risk factors in youth with TSH levels >75th percentile requires further study.
CONTEXT: Thyroid hormones play an important role in metabolic homeostasis, and higher levels have been associated with cardiometabolic risk. OBJECTIVE: To examine the association of cardiometabolic risk factors with TSH levels in US youth. METHODS: Cross-sectional study of youth aged 12 to 18 years without known thyroid abnormalities from 5 National Health and Nutrition Examination Survey cycles (n = 2818) representing 15.4 million US children. Subclinical hypothyroidism (SH) was defined as thyrotropin (TSH) levels of 4.5 to 10 mIU/L. Assessed cardiometabolic risk factors include abdominal obesity (waist circumference >90th percentile), hypertriglyceridemia (triglyceride ≥130 mg/dL), low high-density lipoprotein cholesterol (<40 mg/dL), elevated blood pressure (systolic and diastolic blood pressure ≥90th percentile), hyperglycemia (fasting blood glucose ≥100 mg/dL, or known diabetes), insulin resistance (homeostatic model for insulin resistance > 3.16), and elevated alanine transferase (≥ 50 for boys and ≥44 U/L for girls). Age and sex- specific percentiles for thyroid parameters were calculated. RESULTS: In this cohort of youth (51.3% male), 31.2% had overweight/obesity. The prevalence of SH was 2.0% (95% CI 1.2-3.1). The median TSH levels were higher in youth with overweight/obesity (P < 0.001). Adjusting for age, sex, race/ethnicity, and obesity, youth with TSH in the fourth quantile had higher odds of abdominal obesity (OR 2.53 [1.43-4.46], P = .002), insulin resistance (OR 2.82 [1.42-5.57], P = .003), and ≥2 cardiometabolic risk factors (CMRF) (OR 2.20 [1.23-3.95], P = .009). CONCLUSION: The prevalence of SH is low in US youth. The higher odds of insulin resistance and cardiometabolic risk factors in youth with TSH levels >75th percentile requires further study.
Authors: Miriam B Vos; Stephanie H Abrams; Sarah E Barlow; Sonia Caprio; Stephen R Daniels; Rohit Kohli; Marialena Mouzaki; Pushpa Sathya; Jeffrey B Schwimmer; Shikha S Sundaram; Stavra A Xanthakos Journal: J Pediatr Gastroenterol Nutr Date: 2017-02 Impact factor: 2.839
Authors: C Rochon; I Tauveron; C Dejax; P Benoit; P Capitan; A Fabricio; C Berry; C Champredon; P Thieblot; J Grizard Journal: Clin Sci (Lond) Date: 2003-01 Impact factor: 6.124