Comparing Low-density Lipoprotein Cholesterol Population Estimates Using Different Predictive Equations: National Health and Nutrition Examination Survey, 2015-2018.

Introduction: It is unclear if young adults with hyperlipidemia are also more likely to have non-lipid cardiovascular disease (CVD) risk-factors or higher long-term CVD risk. As such, we assessed associations between low-density lipoprotein cholesterol (LDL-C) levels and non-lipid CVD risk factors as well as 10- and 30-year risk of CVD in young adults. Methods: We included a nationally representative sample of adults 20-<40 years from the National Health and Nutrition Examination Survey (January 2015-March 2020). We described sociodemographic characteristics and CVD risk factors by LDL-C level. We used simple logistic regression to determine associations between LDL-C level and each CVD risk factor. We then calculated the median 10- and 30-year CVD risk by LDL-C category for each participant using the PREVENT risk estimating equations. Results: Among 2,133 (weighted estimation: 90.3 million) young adults, 51.0%, 32.6%, 12.5%, and 3.9% had an LDL-C <100 mg/dL, 100-<130 mg/dL, 130-<160 mg/dL, and 160-<190 mg/dL, respectively. Compared to participants with an LDL-C <100mg/dL, those with an LDL-C 100-<130 mg/dL, 130-<160 mg/dL, and 160-189 mg/dL were more likely to have metabolic syndrome, an enlarged waist, hypertension, elevated glucose, diabetes mellitus, high triglycerides, and high hs-CRP (Table). The median 10-year risk of CVD was approximately 1% across all baseline LDL-C levels. Over a 30-year time horizon, the median risk of incident CVD exceeded 5% only in the 130-<160mg/dL and 160-189mg/dL LDL-C categories (6.0% and 7.6%, respectively). LDL-C and the interaction between LDL-C and CVD risk enhancing factors were independently associated with 30-year predicted risk of CVD (p=0.006 and p=0.005, respectively). Discussion: Many young adults with an elevated LDL-C have concomitant high-risk CVD characteristics. The risk/benefit calculous for addressing this modifiable risk factor in these patients should be further explored.

A long-standing association exists between elevated triglyceride levels and cardiovascular disease* (CVD).1,2 However, the extent to which triglycerides directly promote CVD or represent a biomarker of risk has been debated for 3 decades.3 To this end, 2 National Institutes of Health consensus conferences evaluated the evidentiary role of triglycerides in cardiovascular risk assessment and provided therapeutic recommendations for hypertriglyceridemic states.4,5 Since 1993, additional insights have been made vis-a-vis the atherogenicity of triglyceride-rich lipoproteins (TRLs; ie, chylomicrons and very low-density lipoproteins), genetic and metabolic regulators of triglyceride metabolism, and classification and treatment of hypertriglyceridemia. It is especially disconcerting that in the United States, mean triglyceride levels have risen since 1976, in concert with the growing epidemic of obesity, insulin resistance (IR), and type 2 diabetes mellitus (T2DM).6,7 In contrast, mean low-density lipoprotein cholesterol (LDL-C) levels have receded.7 Therefore, the purpose of this scientific statement is to update clinicians on the increasingly crucial role of triglycerides in the evaluation and management of CVD risk and highlight approaches aimed at minimizing the adverse public health–related consequences associated with hypertriglyceridemic states. This statement will complement recent American Heart Association scientific statements on childhood and adolescent obesity8 and dietary sugar intake9 by emphasizing effective lifestyle strategies designed to lower triglyceride levels and improve overall cardiometabolic health. It is not intended to serve as a specific guideline but will be of value to the Adult Treatment Panel IV (ATP IV) of the National Cholesterol Education Program, from which evidence-based guidelines will ensue. Topics to be addressed include epidemiology and CVD risk, ethnic and racial differences, metabolic determinants, genetic and family determinants, risk factor correlates, and effects related to nutrition, physical activity, and lipid medications. In the United States, the National Health and …

BackgroundThe association between serum cholesterol levels and depression has been studied extensively; however, results are inconsistent. This study aimed to investigate the association between low-density lipoprotein cholesterol (LDL-C) levels and depressive symptoms among Korean adults.MethodsThis cross-sectional study used data obtained from the 2007–2015 Korea National Health and Nutrition Examination Survey. In total, 40,904 adults were included in the final analysis. Participants were categorized into five groups according to their LDL-C levels, using the Korean guidelines for dyslipidemia. Symptoms of depression were evaluated using a self-reported questionnaire. Weighted logistic regression was used to examine the relationship between LDL-C levels and self-reported depressive symptoms.ResultsCompared with the intermediate category, the lowest (<70 mg/dL) and highest (≥160 mg/dL) LDL-C categories were associated with depressive symptoms, after adjusting for potential confounding factors (odds ratio [OR], 1.191; 95% confidence interval [CI], 1.008–1.409; OR, 1.241; 95% CI, 1.073–1.435, respectively). The highest LDL-C category was positively associated with depressive symptoms in those who were middle-aged, female, had a low body mass index, and taking or not taking dyslipidemia medications.ConclusionA U-shaped association was identified between LDL-C categories and self-reported depressive symptoms. Our findings suggest that LDL-C levels that are too low or too high are associated with self-reported depressive symptoms. Further prospective studies are needed to determine the causal relationship of this association.

Hepatitis C Virus Genotypes and Viral Concentrations in Participants of a General Population Survey in the United States

Rationale for Targeted Rather Than Population Based Screening With C-Reactive Protein Using the National Health and Nutrition Examination Survey (1999 to 2002)

Allergic sensitization is a key risk factor for but not synonymous with allergic disease

Background/AimsThe aim of this study is to compare Friedewald-estimated and directly measured low density lipoprotein cholesterol (LDL-C) values and assess the concordance in guideline risk classification between the two methods.MethodsThe data were derived from the 2009 to 2011 Korea National Health and Nutrition Examination Survey. We included subjects with triglyceride (TG) levels < 400 mg/dL. Analysis was done for 6,454 subjects who had all lipid panels— total cholesterol, directly measured LDL-C, high density lipoprotein cholesterol (HDL-C), and TG.ResultsThe subjects ranged in age from 10 to 87 years old. The mean age was 41.5 ± 17.3 years. For subjects with TG < 400 mg/dL, overall concordance in guideline risk classification was 79.1%. The Friedewald formula tended to underestimate LDL-C more at higher TG or lower HDL-C levels. Especially, the percent of subjects who were misclassified into a lower risk category was 31% when TG were 200 to 299 mg/dL; and 45.6% when TG were 300 to 399 mg/dL. A greater underestimation of LDL-C occurred at higher TG and lower Friedewald-estimated LDL-C levels. Of subjects with a Friedewald-estimated LDL-C < 70 mg/dL, 55.4% had a directly measured LDL-C ≥ 70 mg/dL when TG were 200 to 399 mg/dL.ConclusionsThe Friedewald equation tends to underestimate LDL-C in high-risk subjects such as hypertriglyceridemia and hypo-HDL-cholesterolemia. For these individuals accurate assessment of LDL-C is crucial, and therefore additional evaluation is warranted.

The Prevalence of Urinary Incontinence Among Community Dwelling Men: Results From the National Health and Nutrition Examination Survey

Smoking is associated with elevated low-density lipoprotein cholesterol (LDL-C) levels. However, the accuracies of the Friedewald, Sampson, and Martin LDL-C-estimating equations based on smoking status are unclear. We analyzed the accuracy of LDL-C levels estimated using these three equations based on tobacco and electronic cigarette smoking status. Data on LDL-C and other lipid components were obtained from the Korea National Health and Nutrition Examination Survey from January 2009 to December 2021. Direct LDL-C (dLDL-C) levels and smoking data of 12,325 participants were evaluated. Current smokers had higher triglyceride levels than never smokers. Electronic cigarette smokers had higher triglyceride and dLDL-C levels than never smokers. The Martin equation yielded more accurate mean absolute deviations than the other equations for the group with triglyceride levels &lt;400 mg/dL as well as more accurate median absolute deviation values, except for the group with dLDL-C levels &lt;40 mg/dL. Similar estimates were derived from the equations when the triglyceride levels were &lt;150 mg/dL. However, the Martin equation may lead to the overestimation of LDL-C levels. In conclusion, the Martin equation is suitable for triglyceride levels &lt;400 mg/dL regardless of the electronic cigarette/tobacco smoking status; if the triglyceride level is &lt;150 mg, the Friedewald equation could also be considered, regardless of the electronic cigarette/tobacco smoking status.

When Do The Milestones of Puberty Occur?: Wu T, Mendola P, Buck GM. Ethnic differences in the presence of secondary sex characteristics and menarche among U.S. girls: The third national health and nutrition examination survey, 1998\\N1994. Pediatrics 2002;110:752\\N7

Trends in the Prevalence, Awareness, Treatment and Control of High Low Density Lipoprotein-Cholesterol Among United States Adults From 1999–2000 Through 2009–2010

Dose-response relationship between physical activity and dyslipidemia in youth

Prospective 10-year evaluation of hypobetalipoproteinemia in a cohort of 772 firefighters and cross-sectional evaluation of hypocholesterolemia in 1,479 men in the National Health and Nutrition Examination Survey I

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