scholarly journals Association of serum 25-Hydroxy vitamin D with total and regional adiposity and cardiometabolic traits

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243850
Author(s):  
Reka Karuppusami ◽  
Belavendra Antonisami ◽  
Senthil K. Vasan ◽  
Mahasampath Gowri ◽  
Hepsy Y. Selliah ◽  
...  
Keyword(s):  
Vitamin D ◽  
Fat Mass ◽  
Composition Analysis ◽  
Inverse Association ◽  
Cvd Risk ◽  
Cross Sectional ◽  
Fat Depots ◽  
Total Fat ◽  
Regional Adiposity ◽  
Cardiometabolic Traits

Background Lower serum 25-hydroxyvitamin D [25(OH)D] is associated with greater adiposity and adverse cardiometabolic risk profile. The evidence is inconsistent among South Asian Indians. We aimed to examine associations between 25(OH)D and cardiovascular (CVD) risk markers in a rural and urban cohort from South India. Subjects/Methods In this cross sectional study, 373 individuals (men, n = 205) underwent detailed CVD risk marker assessment including anthropometry [body mass index (BMI), waist, (WC) and hip circumferences (HC)], body composition analysis using dual energy x-ray absorptiometry (DXA), blood pressure and biochemical analysis (glucose, insulin and lipids). The distribution of CVD risk factors were compared across serum 25(OH)D levels, stratified as deficiency (<20 ng/ml), insufficiency (20 to 29 ng/ml) and normal (≥30 ng/ml) levels. Multiple regression analysis, adjusting for potential confounders, was used to study associations of 25(OH)D with adiposity and cardiometabolic traits. Results The mean and standard deviation (SD) of age, BMI and 25(OH)D levels were 41.4 (1.1) years, 25.5 (4.8) kg/m2 and 23.4 (10.4) ng/ml respectively. The prevalence of 25(OH)D deficiency was 39.9% in this cohort. Individuals in the 25(OH)D deficiency category had significantly higher mean (SD) BMI [26.6 (5.1) kg/m2], waist circumference [89.9 (12.5) cm] and total fat mass [20.6 (7.9) kg] compared with the Vitamin D sufficient group [BMI: 24.0 (4.4); WC 84.7 (12.0); total fat mass: 15.2 (6.8)]. Significantly inverse associations were observed with DXA measured total and regional fat depots with 25(OH)D levels, while anthropometric indices of adiposity showed significant inverse association only in women. After adjusting for total fat mass, no significant associations were observed between 25(OH)D and the cardiometabolic traits. Conclusions Our results confirm that lower 25(OH)D is independently associated with both total and regional adiposity, but not with cardiometabolic traits, in this population.

scholarly journals Vitamin D and Hospital Admission in Older Adults: A Prospective Association

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 616
Author(s):  
Avril Beirne ◽  
Kevin McCarroll ◽  
James Bernard Walsh ◽  
Miriam Casey ◽  
Eamon Laird ◽  
...  
Keyword(s):  
Older Adults ◽  
Vitamin D ◽  
Hospital Admission ◽  
Cross Sectional Study ◽  
Vitamin D Supplementation ◽  
Inverse Association ◽  
Cross Sectional ◽  
Prospective Association ◽  
Randomised Controlled

The health effects of vitamin D are well documented, with increasing evidence of its roles beyond bone. There is, however, little evidence of the effects of vitamin D on hospitalisation among older adults. This study aimed to prospectively determine the relationship of vitamin D status in older adults with hospital admission and emergency department (ED) attendance. Trinity University of Ulster Department of Agriculture (TUDA) is a large cross-sectional study of older adults with a community population from three disease-defined cohorts (cognitive dysfunction, hypertension, and osteoporosis). Participants included in this analysis were recruited between 2008 and 2012. ED and hospital admission data were gathered from the date of TUDA participation until June 2013, with a mean follow up of 3.6 years. Of the 3093 participants, 1577 (50.9%) attended the ED during the period of follow-up. Attendees had lower mean serum 25(OH)D concentrations than non-attendees (59.1 vs. 70.6 nmol/L). Fully adjusted models showed an inverse association between vitamin D and ED attendance (Hazard Ratio (HR) 0.996; 95% Confidence Interval (CI) 0.995–0.998; p < 0.001). A total of 1269 participants (41%) were admitted to hospital during the follow-up. Those admitted had lower mean vitamin D concentrations (58.4 vs. 69.3 nmol/L, p < 0.001). In fully adjusted models, higher vitamin D was inversely associated with hospital admission (HR 0.996; 95% CI 0.994–0.998; p < 0.001) and length of stay (LOS) (β = −0.95, p = 0.006). This study showed independent prospective associations between vitamin D deficiency and increased hospitalisation by older adults. The need for further evaluation of current recommendations in relation to vitamin D supplementation, with consideration beyond bone health, is warranted and should focus on randomised controlled trials.

scholarly journals Biomarker-estimated flavan-3-ol intake is associated with lower blood pressure in cross-sectional analysis in EPIC Norfolk

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Javier I. Ottaviani ◽  
Abigail Britten ◽  
Debora Lucarelli ◽  
Robert Luben ◽  
Angela A. Mulligan ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Systolic Blood Pressure ◽  
Vascular Function ◽  
Cardiovascular Health ◽  
Vascular Diseases ◽  
Inverse Association ◽  
Cvd Risk ◽  
Lower Systolic Blood Pressure ◽  
Cross Sectional ◽  
Salt Reduction

Abstract Flavan-3-ols are a group of bioactive compounds that have been shown to improve vascular function in intervention studies. They are therefore of great interest for the development of dietary recommendation for the prevention of cardio-vascular diseases. However, there are currently no reliable data from observational studies, as the high variability in the flavan-3-ol content of food makes it difficult to estimate actual intake without nutritional biomarkers. In this study, we investigated cross-sectional associations between biomarker-estimated flavan-3-ol intake and blood pressure and other CVD risk markers, as well as longitudinal associations with CVD risk in 25,618 participants of the European Prospective Investigation into Cancer (EPIC) Norfolk cohort. High flavan-3-ol intake, achievable as part of an habitual diet, was associated with a significantly lower systolic blood pressure (− 1.9 (− 2.7; − 1.1) mmHg in men and − 2.5 (− 3.3; − 1.8) mmHg in women; lowest vs highest decile of biomarker), comparable to adherence to a Mediterranean Diet or moderate salt reduction. Subgroup analyses showed that hypertensive participants had stronger inverse association between flavan-3-ol biomarker and systolic blood pressure when compared to normotensive participants. Flavanol intake could therefore have a role in the maintenance of cardiovascular health on a population scale.

scholarly journals Association of Impaired Vascular Endothelial Function with Increased Cardiovascular Risk in Asymptomatic Adults

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Qiuan Zhong ◽  
Qingjiao Nong ◽  
Baoyu Mao ◽  
Xue Pan ◽  
Liuren Meng
Keyword(s):  
Cardiovascular Risk ◽  
Endothelial Function ◽  
Cardiovascular Prevention ◽  
Prognostic Indicator ◽  
Cross Sectional Study ◽  
Vascular Endothelial ◽  
Inverse Association ◽  
Vascular Endothelial Function ◽  
Cvd Risk ◽  
Cross Sectional

Impaired vascular endothelial function has attracted attention as a prognostic indicator of cardiovascular prevention. The association between impaired endothelial function and cardiovascular risk in the asymptomatic population, however, has been poorly explored. We evaluated the association of brachial artery flow-mediated dilation (FMD) with Framingham-estimated 10-year cardiovascular disease (CVD) risk in subjects free of CVD, especially by cardiovascular risk profiles. In total, 680 adults aged 30-74 years were enrolled from Rongan and Rongshui of Liuzhou, Guangxi, China, through a cross-sectional study in 2015. In the full-adjusted model, the odds ratio for the estimated 10-year CVD risk comparing the low FMD (<6%) with the high FMD (≥10%) was 2.81 (95% confidence interval [CI]: 1.21, 6.53;Pfor trend = 0.03). In subgroup analyses, inverse associations between FMD and the estimated 10-year CVD risk were found in participants with specific characteristics. The adjusted odds ratios, comparing the 25th and the 75th percentiles of FMD, were 2.77 (95% CI: 1.54, 5.00) for aged ≥60 years, 1.77 (95% CI: 1.16, 2.70) for female, 1.59 (95% CI: 1.08, 2.35) for nonsmokers, 1.74 (95% CI: 1.02, 2.97) for hypertension, 1.59 (95% CI: 1.04, 2.44) for normal glycaemia, 2.03 (95% CI: 1.19, 3.48) for C-reactive protein ≥10 mg/L, and 1.85 (95% CI: 1.12, 3.06) for eGFR <106 mL/minute per 1.73 m2. Therefore, impaired endothelial function is associated with increased CVD risk in asymptomatic adults. This inverse association is more likely to exist in subjects with higher cardiovascular risk.

scholarly journals Testosterone substitution of hypogonadal men prevents the age-dependent increases in body mass index, body fat and leptin seen in healthy ageing men: results of a cross-sectional study

2002 ◽  
pp. 505-511 ◽  
Author(s):  
C Rolf ◽  
S von Eckardstein ◽  
U Koken ◽  
E Nieschlag
Keyword(s):  
Fat Mass ◽  
Serum Testosterone ◽  
Cross Sectional Study ◽  
Fat Content ◽  
Sectional Study ◽  
Cross Sectional ◽  
Serum Leptin ◽  
Testosterone Substitution ◽  
Age Dependent ◽  
Total Fat

INTRODUCTION: In healthy men, body weight and total fat content increase with advancing age, while serum testosterone levels decrease. In order to elucidate whether a causal relationship between these phenomena exists, we investigated the influence of testosterone or human chorionic gonadotrophin substitution on body mass index (BMI), total fat mass and serum leptin in testosterone-treated and untreated hypogonadal patients in comparison with ageing eugonadal men. METHODS: In a cross-sectional study, the inter-relationships of body weight, total fat mass, serum sex hormones and leptin were analysed in untreated hypogonadal men (n=24; age 19-65 years), treated hypogonadal men (n=61; age 20-67 years) and healthy eugonadal men (n=60; age 24-78 years). Total fat mass was assessed by bioimpedance measurement. Univariate and multiple linear regression analysis was used to detect possible differences. RESULTS: In eugonadal men, serum testosterone levels decreased with advancing age (correlation coefficients: r=-0.71; P<0.0001), while BMI (r=0.39; P=0.002), total fat content (r=0.51; P<0.0001) and leptin (r=0.48; P<0.0001) increased significantly. In untreated hypogonadal patients, an increase in BMI (r=0.50; P=0.013) and total fat mass (r=0.41; P=0.044) was also observed with advancing age. However, in substituted hypogonadal patients, no age-dependent change in BMI (r=0.067; P=0.606), body fat content (r=-0.083; P=0.522), serum testosterone (r=-0,071; P=0.59) or serum leptin (r=-0.23; P=0.176) was found. CONCLUSION: Since testosterone-substituted older hypogonadal men show BMI and fat mass similar to those of younger eugonadal men and since non-treated hypogonadal men are similar to normal ageing men, testosterone appears to be an important factor contributing to these changes. Thus ageing men should benefit from testosterone substitution as far as body composition is concerned.

scholarly journals Serum levels of 25 (OH) vitamin D in adults with obesity sarcopenia

2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Maria Nikolova ◽  
Alexander Penkov
Keyword(s):  
Vitamin D ◽  
Body Composition ◽  
Fat Mass ◽  
Lean Mass ◽  
Fat Free Mass ◽  
Whole Body ◽  
Composition Analysis ◽  
Appendicular Lean Mass ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D

AbstractIntroduction:Obesity has been linked with vitamin D deficiency in a number of cross-sectional studies, reviews and meta-analyses. To assess the correlations of plasma 25(OH) vitamin D levels with indices of body composition examined by DXA with an emphasis on lean and bone mass as well as on indices such as android/gynoid fat, appendicular lean mass (ALM) and appendicular lean mass index (ALMI), fat-mass indexes (FMI), fat-free mass indexes (FFMI) and the ALM-to-BMI index.Materials and Methods:62 adult subjects consented to participate – 27 men (43.5 %) and 35 women (56.5 %). Their mean age was 45.3 ± 9.5 years. Fan-beam dual-energy X-ray (DXA) body composition analysis was performed on a Lunar Prodigy Pro bone densitometer with software version 12.30. Vitamin D was measured by electro-hemi-luminescent detection as 25(OH)D Total (ECLIA, Elecsys 2010 analyzer, Roche Diagnostics). Statistical analyses were done using the SPSS 23.0 statistical package.Results:The serum 25(OH)D level was correlated significantly only to the whole body bone mineral content, the appendicular lean mass index (ALMI) and the ALM-to-BMI index, underlining a predominant role for lean and fat-free mass. Vitamin D showed a very weak correlation to % Body Fat and the Fat Mass Index (FMI) in men only. Moreover, the multiple regression equation including the associated parameters could explain only 7 % of the variation in the serum 25(OH)D levels.Discussion:Our conclusion was, that there are differences in the associations of the vitamin D levels with the different body composition indices, but these associations are generally very weak and therefore – negligible.

scholarly journals Circulating 25-hydroxyvitamin D levels in relation to blood pressure parameters and hypertension in the Shanghai Women's and Men's Health Studies

2012 ◽  
Vol 108 (3) ◽  
pp. 449-458 ◽  
Author(s):  
Tsogzolmaa Dorjgochoo ◽  
Xiao Ou Shu ◽  
Yong-Bing Xiang ◽  
Gong Yang ◽  
Qiuyin Cai ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Antihypertensive Drugs ◽  
Urban China ◽  
Inverse Association ◽  
Cross Sectional ◽  
Who Criteria ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

Little is known about the association of circulating 25-hydroxyvitamin D (25(OH)D) and blood pressure (BP) parameters, including systolic and diastolic BP, pulse pressure (PP), mean arterial pressure (MAP) and hypertension in non-Western populations that have not yet been exposed to foods fortified with vitamins and seldom use vitamin D supplements. A cross-sectional analysis of plasma 25(OH)D levels in association with BP measures was performed for 1460 participants (1055 women and 405 men, aged 40–74 years) of two large cohort studies in Shanghai. Multivariable linear and logistic regressions were conducted. Overall, the prevalence of vitamin D deficiency was 55·8 % using National Health and Nutrition Examination Survey, USA criteria and 29·9 % using WHO criteria. The median plasma 25(OH)D level in the population was 38·0 nmol/l for men and 33·6 nmol/l for women (P < 0·01) among participants who were not on antihypertensive drugs. Among men, BP parameters (systolic BP, diastolic BP and MAP) were significantly and inversely associated with higher quintiles of 25(OH)D compared with the lowest quintile (Ptrend < 0·05 for all). Vitamin D non-deficient status (WHO criteria) was inversely associated with hypertension (ORadjusted = 0·29; 95 % CI 0·10, 0·82). An inverse association was also found between hypertension and the highest quintile of 25(OH)D (ORadjusted = 0·16; 95 % CI 0·04, 0·65 for ≥ 50·6 nmol/l; Ptrend = 0·02). Among women, no significant associations were found for BP parameters and hypertension. The present study shows that vitamin D deficiency is common among adults in urban China. Circulating 25(OH)D levels were inversely related to the levels of individual BP parameters and hypertension among middle-aged and elderly men but not among women. More research is needed to investigate the potential sex differential associations.

scholarly journals Inverse association between serum antioxidant levels and inflammatory markers is moderated by adiposity: a report based on a large representative population sample of American adults

2018 ◽  
Vol 120 (11) ◽  
pp. 1272-1278 ◽  
Author(s):  
Mohsen Mazidi ◽  
Andre Pascal Kengne ◽  
Niki Katsiki ◽  
Dimitri P. Mikhailidis ◽  
Maciej Banach
Keyword(s):  
Vitamin D ◽  
Linear Regression ◽  
Population Sample ◽  
Antioxidant Properties ◽  
Inverse Association ◽  
Linear Regression Models ◽  
Cvd Risk ◽  
Negatively Associated ◽  
Markers Of Inflammation ◽  
25 Hydroxy Vitamin D

AbstractWe examined the association between plasma antioxidant levels and markers of inflammation, including C-reactive protein (CRP) and fibrinogen (FG) in US adults. National Health and Nutrition Examination Survey participants examined between 2001 and 2002 were included, if data on CRP or FG levels. Serum vitamins A and E, two retinyl esters, and six carotenoids were measured using HPLC with photodiode array detection. Multivariable-adjusted linear regression analyses accounted for the survey design and sample weights. A total of 784 eligible participants were included; 47·5 % (n372) were men. In multivariable linear regression models, serumα-carotene,trans-β-carotene,cis-β-carotene,β-cryptoxanthin, combined lutein/zeaxanthin,trans-lycopene, retinyl palmitate,α-tocopherol, retinol and 25-hydroxy vitamin D were negatively associated with serum CRP (P<0·001 for all comparisons). Serumα-carotene,trans-β-carotene,cis-β-carotene, combined lutein/zeaxanthin,trans-lycopene,α-tocopherol, retinol and 25-hydroxy vitamin D were negatively associated with serum FG levels (P<0·001 for all comparisons). In the same model, the risk of CVD, defined as CRP levels >3 mg/l, decreased with increasing levels of antioxidants (α-carotene,trans-β-carotene,cis-β-carotene, vitamins A and E). Furthermore, we found a moderate impact of adiposity on the link between antioxidants and CRP. Our results suggest that the lower the antioxidants levels, the higher the inflammatory burden, based on CRP and FG levels. Adiposity moderately affects this association. Furthermore, an inverse relationship between CVD risk and antioxidant levels was observed. This finding suggests that reduced levels of vitamins with antioxidant properties may predispose to increased CVD risk.

scholarly journals Associations of Serum Nitric Oxide with Vitamin D and Other Metabolic Factors in Apparently Healthy Adolescents

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Nasser M. Al-Daghri ◽  
Ihtisham Bukhari ◽  
Sobhy M. Yakout ◽  
Shaun Sabico ◽  
Malak N. K. Khattak ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Vitamin D ◽  
Inverse Correlation ◽  
Inverse Association ◽  
Anthropometric Parameters ◽  
Serum Triglycerides ◽  
Cross Sectional ◽  
Apparently Healthy

Introduction. Nitric oxide (NOx) is an important biomolecule which interacts with other molecules including 25(OH)D to mediate various metabolic pathways. Interactions and associations of NOx with 25(OH)D have been well studied bothin vitroandin vivo, yet associations in apparently healthy adolescents have never been studied.Methods. A total of 740 (245 boys and 495 girls) apparently healthy Saudi adolescents aged 10-17 years were included in this cross-sectional study, to determine the associations of NOx with 25(OH)D and other biomarkers in Saudi adolescents. Serum NOx, 25(OH)D, and other biochemical and anthropometric parameters were measured following standard protocols and manufacturers’ guidelines.Results. NOx level was significantly higher in boys than girls (p<0.001). In all subjects, NOx showed a significant inverse correlation with 25(OH)D. After stratification according to sex however this significant association was observed only in boys and not in girls. NOx was also significantly associated with BMI, serum triglycerides, and systolic blood pressure in all subjects.Conclusion. The significantly inverse association of NOx and 25(OH)D among apparently healthy adolescents is influenced by sex and further strengthens the extraskeletal role of 25(OH)D in maintaining endothelial homeostasis in this age group, particularly in boys. Whether vitamin D correction can influence NOx production over time among adolescents remains to be proven.

scholarly journals Sarcopenia in Type 2 Diabetes Mellitus: A Cross-Sectional Observational Study

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
L. M. Pechmann ◽  
T. H. Jonasson ◽  
V. S. Canossa ◽  
H. Trierweiler ◽  
G. Kisielewicz ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Handgrip Strength ◽  
The Body ◽  
Control Group ◽  
Composition Analysis ◽  
Cross Sectional ◽  
Total Fat

Background. The aim of this study was to compare the prevalence of low muscle mass and sarcopenia in patients with type 2 diabetes mellitus (T2DM) versus paired controls (control group, CG) and the association between sarcopenia and chronic diabetes complications. Methods. Men and women ≥50 years with T2DM (T2DM group, T2DMG) were recruited during routine outpatient visits. Total body densitometry and handgrip strength (HGS) were evaluated in the T2DMG and CG, while the T2DMG was also evaluated for the physical performance using the gait speed (GS) test. Sarcopenia was diagnosed according to the criteria of the Foundation for the National Institutes of Health Sarcopenia Project (FNIH). Results. The study included 177 individuals in the T2DMG and 146 in the CG. The mean HGS value was lower in the T2DMG (24.4 ± 10.3 kg) compared with the CG (30.9 ± 9.15 kg), p < 0.001 , with low HGS in 46 (25.9%) and 10 (9%) in the T2DMG and CG, respectively ( p < 0.001 ). The prevalence of sarcopenia defined according to the FNIH criteria was higher in the T2DMG 23 (12.9%) compared with the CG 8 (5.4%), p < 0.03 . The presence of albuminuria increased the odds of sarcopenia (odds ratio (OR) 2.84, 95% confidence interval (CI) 1.07–7.68, p = 0.04 ) and osteoporosis (OR 3.38, 95% CI 1.12–9.89, p = 0.03 ), even in patients with mild to moderate nephropathy. The body composition analysis showed increased odds of sarcopenia with increased percentage of total fat (%TF) in women (OR 1.18, 95% CI, 1.03–1.43, p = 0.03 ) and men (OR 1.31, 95% CI, 1.10–1.75, p = 0.01 ). Conclusion. Patients with T2DM presenting with albuminuria, osteoporosis, and increased %TF were more likely to have sarcopenia. This finding emphasizes the need for patients with T2DM to be evaluated for sarcopenia to allow for early implementation of measures to prevent or treat this disorder.

Serum Transaminase Concentrations and the Presence of Irritable Bowel Syndrome Are Associated with Serum 25-Hydroxy Vitamin D Concentrations in Adolescent Girls Who Are Overweight and Obese

2017 ◽  
Vol 71 (3-4) ◽  
pp. 234-241 ◽  
Author(s):  
Sayyed Saeid  Khayyatzadeh ◽  
Hassanali Vatanparast ◽  
Amir Avan ◽  
Mohammad  Bagherniya ◽  
Afsane  Bahrami ◽  
...  
Keyword(s):  
Vitamin D ◽  
Irritable Bowel Syndrome ◽  
Adolescent Girls ◽  
Activity Level ◽  
Categorical Variables ◽  
Inverse Association ◽  
Cross Sectional ◽  
25 Hydroxy Vitamin D ◽  
Obese Subjects ◽  
Irritable Bowel

Background/Aims: Vitamin D deficiency has become endemic globally and its etiology is complex. Few studies have investigated the determinants of serum 25-hydroxy vitamin D (25-OH D). The aim of this study was to investigate the association between lifestyle patterns, liver functional tests (LFTs), and the presence of irritable bowel syndrome (IBS) with serum 25-OH D in apparently healthy girls. Methods: This cross-sectional study was undertaken in 965 adolescent girls aged 12–18 years. IBS was diagnosed using the Rome III questionnaire. An electrochemiluminescence method was used to measure serum 25-OH D. LFTs were measured using commercial kits and an auto analyzer. Linear regression and univariate analyses were performed to determine the association between continuous and categorical variables with serum 25-OH D respectively. Results: Serum 25-OH D was significantly higher in normal weight subjects compared to either overweight or obese subjects (9.5 ± 7.02 vs. 7.9 ± 5.7 ng/mL, p = 0.03). Physical activity level was positively associated with serum 25-OH D in overweight and obese subjects (β = 0.15, p < 0.05). An inverse relationship was found between the presence of IBS and 25-OH D in both normal (β = –1.95, p < 0.05), overweight and obese subjects (β = –1.83, p < 0.05). Serum alanine transaminase (ALT; β = –0.19, p < 0.05) and aspartate transaminase (β = –0.17, p < 0.05) were inversely associated with serum 25-OH in overweight and obese subjects. Conclusions: Individuals with IBS had significantly lower serum 25-OH D concentrations. In addition, there was an inverse association between serum ALT and 25-OH D. Prospective studies, and perhaps interventional trials, will be required to clarify these associations.

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