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Objective: To investigate the associations between data-driven dietary patterns, immune function, and incident type 2 diabetes (T2D) and the mediating effects of immune function. Methods: This study included 375,665 participants without diabetes at baseline in the UK Biobank study. Dietary patterns were derived through principal component analysis of food frequency questionnaire data. Immune function was assessed using 14 individual inflammatory markers and an integrated low-grade inflammation score (INFLA-score). Cox proportional hazard models were used to estimate the associations of dietary patterns or immune function with incident T2D. Linear regressions were used to estimate the associations of dietary patterns with immune function. Mediating effects of immune function were quantified. Results: During a median 14.6-year follow-up, 13,932 participants developed T2D. Four dietary patterns were identified: prudent diet (high in whole grains, vegetables, fruits, fish), wheat/dairy/eggs restrictive diet (limiting these foods), meat-based diet (high in red/processed meat, salt), and full-cream dairy diet (preference for full cream milk or dairy products). The prudent diet was negatively (HRQ4 vs Q1, 0.69 [95% CI, 0.65–0.72]), while the wheat/dairy/eggs restrictive diet (HRQ4 vs Q1, 1.08 [95% CI, 1.03–1.13]), meat-based diet (HRQ4 vs Q1, 1.12 [95% CI, 1.06–1.17]), and full-cream dairy diet (HRQ4 vs Q1, 1.08 [95% CI, 1.03–1.12]) were positively associated with incident T2D (all p for trend ≤0.04). The prudent diet was negatively and the full-cream dairy diet was positively associated with most inflammatory markers. Most inflammatory markers, especially INFLA-score (HR, 1.18 [95% CI, 1.16–1.20]), were positively associated with incident T2D. INFLA-score mediated 13% of the association with incident T2D for the prudent diet and 34% for the full-cream dairy diet. Conclusions: This study identified four distinct dietary patterns and a range of inflammatory markers associated with incident T2D. A notable proportion of the associations between dietary patterns and T2D was mediated by immune function. [ABSTRACT FROM AUTHOR]

This study aimed to estimate the nationwide prevalence of cardiometabolic diseases (CMD) among adults with underweight in the US general population. Using data from the National Health and Nutrition Examination Survey (1999–2020), we estimated the age-standardised prevalence of dyslipidemia, hypertension, diabetes, chronic kidney disease, CVD and the presence of zero or at least two CMD. Multivariable Poisson regressions were used to compare CMD prevalence between subgroups, adjusting for age, sex and race/ethnicity. Among the 855 adults with underweight included, the weighted mean age was 40·8 years, with 68·1 % being women and 70·4 % non-Hispanic White. The estimated prevalence rates were 23·4 % for dyslipidemia (95 % CI 19·4 %, 27·5 %), 15·6 % for hypertension (95 % CI 13·3 %, 17·8 %), 2·5 % for diabetes (95 % CI 1·5 %, 3·5 %), 7·9 % for chronic kidney disease (95 % CI 6·9 %, 8·8 %) and 6·1 % for CVD (95 % CI 4·3 %, 7·9 %). The prevalence of having zero and at least two CMD was 50·6 % (95 % CI 44·1 %, 57·0 %) and 12·3 % (95 % CI 8·1 %, 16·4 %), respectively. Non-Hispanic Black adults had significantly higher prevalence of diabetes (adjusted prevalence ratio, 3·35; 95 % CI 1·35, 8·30) compared with non-Hispanic White adults. In conclusion, approximately half of the underweight adults had at least one CMD, and 12·3 % had at least two CMD. Prevention and management of CMD in underweight adults are critical yet neglected public health challenges. [ABSTRACT FROM AUTHOR]

Objective: The objective of this study was to compare race‐ and ethnicity‐specific BMI cutoffs for the three classes of obesity based on equivalent risk of type 2 diabetes (T2D). Methods: Participants without T2D were included from the UK Biobank, the China Health and Nutrition Survey, and the Singapore Chinese Health Study. Poisson regressions with restricted cubic splines were applied to determine BMI cutoffs for each non‐White race and ethnicity for equivalent incidence rates of T2D at BMI values of 30.0, 35.0, and 40.0 kg/m2 in White adults. Results: During a median follow‐up of 13.8 years among 507,763 individuals, 5.2% developed T2D. In women, BMI cutoffs for an equivalent incidence rate of T2D as observed at 40.0 kg/m2 in White adults were 31.6 kg/m2 in Black, 29.2 kg/m2 in British Chinese, 27.3 kg/m2 in South Asian, 26.9 kg/m2 in Native Chinese, and 25.1 kg/m2 in Singapore Chinese adults. In men, the corresponding BMI cutoffs were 31.9 kg/m2 in Black, 30.6 kg/m2 in British Chinese, 29.0 kg/m2 in South Asian, 29.6 kg/m2 in Native Chinese, and 27.6 kg/m2 in Singapore Chinese adults. The race and ethnicity order was consistent when equivalent BMI cutoffs were estimated for class I and II obesity. Conclusions: Establishing a race‐ and ethnicity‐tailored classification of the three classes of obesity is urgently needed. [ABSTRACT FROM AUTHOR]

OBJECTIVE: Whether genetic susceptibility to disease and dietary cholesterol (DC) absorption contribute to inconsistent associations of DC consumption with diabetes and cardiovascular disease (CVD) remains unclear. RESEARCH DESIGN AND METHODS: DC consumption was assessed by repeated 24-h dietary recalls in the UK Biobank. A polygenetic risk score (PRS) for DC absorption was constructed using genetic variants in the Niemann-Pick C1-Like 1 and ATP Binding Cassettes G5 and G8 genes. PRSs for diabetes, coronary artery disease, and stroke were also created. The associations of DC consumption with incident diabetes (n = 96,826) and CVD (n = 94,536) in the overall sample and by PRS subgroups were evaluated using adjusted Cox models. RESULTS: Each additional 300 mg/day of DC consumption was associated with incident diabetes (hazard ratio [HR], 1.17 [95% CI, 1.07–1.27]) and CVD (HR, 1.09 [95% CI, 1.03–1.17]), but further adjusting for BMI nullified these associations (HR for diabetes, 0.99 [95% CI, 0.90–1.09]; HR for CVD, 1.04 [95% CI, 0.98–1.12]). Genetic susceptibility to the diseases did not modify these associations (P for interaction ≥0.06). The DC-CVD association appeared to be stronger in people with greater genetic susceptibility to cholesterol absorption assessed by the non-high-density lipoprotein cholesterol-related PRS (P for interaction = 0.04), but the stratum-level association estimates were not statistically significant. CONCLUSIONS: DC consumption was not associated with incident diabetes and CVD, after adjusting for BMI, in the overall sample and in subgroups stratified by genetic predisposition to cholesterol absorption and the diseases. Nevertheless, whether genetic predisposition to cholesterol absorption modifies the DC-CVD association requires further investigation. [ABSTRACT FROM AUTHOR]

Context: The investigation of the association between blood glucose within normal range and all-cause mortality among individuals without traditional risk factors is limited., Objective: To determine the associations of 3 glycemic measures (fasting plasma glucose [FPG], hemoglobin A1c [HbA1c], and 2-h glucose) in the normal range with all-cause mortality among individuals without traditional risk factors., Design: Retrospective cohort study., Setting: US National Health and Nutrition Examination Survey in 1988-1994 and 1999-2018., Participants: Non-pregnant adults who had a measurement of 2-h glucose, FPG, and HbA1c, and absence of traditional risk factors were included., Main Outcome Measures: Cox proportional hazard models were performed to examine the associations of normal FPG (n=5793), normal HbA1c (n=8179), and normal 2-h glucose (n=3404) with all-cause mortality., Results: The significant association was found between 2-h glucose within the normal range and all-cause mortality among those without traditional risk factors. Compared to participants with 2-h glucose <80 mg/dL, participants with a higher normal 2-h glucose level had a higher risk of all-cause mortality (110-139 mg/dL: HR, 1.80 [95% CI, 1.03-3.15]). In the subgroup analysis, significant associations were also found among people aged ≥60 years and men. No significant associations were found between normal FPG and HbA1c levels and all-cause mortality., Conclusions: Among US adults without traditional risk factors, high normal 2-h glucose level was positively associated with all-cause mortality. This result highlights the potential importance of maintaining a lower normal level of 2-h glucose for preventing mortality in individuals who are conventionally considered to be cardiovascular healthy., (© The Author(s) 2024. Published by Oxford University Press on behalf of the Endocrine Society. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com. See the journal About page for additional terms.)