Longitudinal association between cardiovascular risk factors and depression in young people: a systematic review and meta-analysis of cohort studies

Abstract Background Depression is a common and serious mental illness that begins early in life. An association between cardiovascular disease (CVD) and subsequent depression is clear in adults. We examined associations between individual CVD risk factors and depression in young people. Methods We searched MEDLINE, EMBASE, and PsycINFO databases from inception to 1 January 2020. We extracted data from cohort studies assessing the longitudinal association between CVD risk factors [body mass index (BMI), smoking, systolic blood pressure (SBP), total cholesterol, high-density lipoprotein] and depression, measured using a validated tool in individuals with mean age of 24 years or younger. Random effect meta-analysis was used to combine effect estimates from individual studies, including odds ratio (OR) for depression and standardised mean difference for depressive symptoms. Results Based on meta-analysis of seven studies, comprising 15 753 participants, high BMI was associated with subsequent depression [pooled OR 1.61; 95% confidence interval (CI) 1.21–2.14; I2 = 31%]. Based on meta-analysis of eight studies, comprising 30 539 participants, smoking was associated with subsequent depression (pooled OR 1.73; 95% CI 1.36–2.20; I2 = 74%). Low, but not high, SBP was associated with an increased risk of depression (pooled OR 3.32; 95% CI 1.68–6.55; I2 = 0%), although this was based on a small pooled high-risk sample of 893 participants. Generalisability may be limited as most studies were based in North America or Europe. Conclusions Targeting childhood/adolescent smoking and obesity may be important for the prevention of both CVD and depression across the lifespan. Further research on other CVD risk factors including blood pressure and cholesterol in young people is required.

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Effects of a Paleolithic Diet on Cardiovascular Disease Risk Factors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Advances in Nutrition ◽

10.1093/advances/nmz007 ◽

2019 ◽

Vol 10 (4) ◽

pp. 634-646 ◽

Cited By ~ 12

Author(s):

Ehsan Ghaedi ◽

Mohammad Mohammadi ◽

Hamed Mohammadi ◽

Nahid Ramezani-Jolfaie ◽

Janmohamad Malekzadeh ◽

...

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Cardiovascular Disease ◽

Lipid Profile ◽

Meta Analysis ◽

Controlled Trials ◽

Cvd Risk Factors ◽

Paleolithic Diet ◽

Cvd Risk ◽

Randomized Controlled

ABSTRACTThere is some evidence supporting the beneficial effects of a Paleolithic diet (PD) on cardiovascular disease (CVD) risk factors. This diet advises consuming lean meat, fish, vegetables, fruits, and nuts and avoiding intake of grains, dairy products, processed foods, and added sugar and salt. This study was performed to assess the effects of a PD on CVD risk factors including anthropometric indexes, lipid profile, blood pressure, and inflammatory markers using data from randomized controlled trials. A comprehensive search was performed in the PubMed, Scopus, ISI Web of Science, and Google Scholar databases up to August 2018. A meta-analysis was performed using a random-effects model to estimate the pooled effect size. Meta-analysis of 8 eligible studies revealed that a PD significantly reduced body weight [weighted mean difference (WMD) = −1.68 kg; 95% CI: −2.86, −0.49 kg], waist circumference (WMD = −2.72 cm; 95% CI: −4.04, −1.40 cm), BMI (in kg/m2) (WMD = −1.54; 95% CI: −2.22, −0.87), body fat percentage (WMD = −1.31%; 95% CI: −2.06%, −0.57%), systolic (WMD = −4.75 mm Hg; 95% CI: −7.54, −1.96 mm Hg) and diastolic (WMD = −3.23 mm Hg; 95% CI: −4.77, −1.69 mm Hg) blood pressure, and circulating concentrations of total cholesterol (WMD = −0.23 mmol/L; 95% CI: −0.42, −0.04 mmol/L), triglycerides (WMD = −0.30 mmol/L; 95% CI: −0.55, −0.06 mmol/L), LDL cholesterol (WMD = −0.13 mmol/L; 95% CI: −0.26, −0.01 mmol/L), and C-reactive protein (CRP) (WMD = −0.48 mg/L; 95% CI: −0.79, −0.16 mg/L) and also significantly increased HDL cholesterol (WMD = 0.06 mmol/L; 95% CI: 0.01, 0.11 mmol/L). However, sensitivity analysis revealed that the overall effects of a PD on lipid profile, systolic blood pressure, and circulating CRP concentrations were sensitive to removing some studies and to the correlation coefficients, hence the results must be interpreted with caution. Although the present meta-analysis revealed that a PD has favorable effects on CVD risk factors, the evidence is not conclusive and more well-designed trials are still needed.

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Cardiovascular risk factors in those born preterm – systematic review and meta-analysis

Journal of Developmental Origins of Health and Disease ◽

10.1017/s2040174420000914 ◽

2020 ◽

pp. 1-16

Author(s):

Prabha H. Andraweera ◽

Bradley Condon ◽

Gemma Collett ◽

Stefania Gentilcore ◽

Zohra S. Lassi

Keyword(s):

Risk Factors ◽

Systematic Review ◽

Blood Pressure ◽

Early Adolescence ◽

Gestational Age ◽

Meta Analysis ◽

Later Life ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Subgroup Analyses

Abstract Emerging evidence demonstrates a link between preterm birth (PTB) and later life cardiovascular disease (CVD). We conducted a systematic review and meta-analysis to compare conventional CVD risk factors between those born preterm and at term. PubMed, CINAHL, SCOPUS, and EMBASE databases were searched. The review protocol is registered in PROSPERO (CRD42018095005). CVD risk factors including systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index, lipid profile, blood glucose, and fasting insulin among those born preterm (<37 weeks’ gestation) were compared with those born at term (≥37 weeks’ gestation). Subgroup analyses based on gender, age, gestational at birth (<32 weeks’ gestation and <28 weeks’ gestation), and PTB associated with small for gestational age or average for gestational age were also performed. Fifty-six studies provided data on 308,987 individuals. Being born preterm was associated with 3.26 mmHg (95% confidence interval [CI] 2.08 to 4.44) higher mean SBP and 1.32 mmHg (95% CI: 0.61 to 2.04) higher mean DBP compared to being born at term. Subgroup analyses demonstrated that SBP was higher among (a) preterm compared to term groups from early adolescence until adulthood; (b) females born preterm but not among males born preterm compared to term controls; and (c) those born at <32 weeks or <28 weeks compared to term. Our meta-analyses demonstrate higher SBP and DBP among those born preterm compared to term. The difference in SBP is evident from early adolescence until adulthood.

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Can traditional risk factors explain the higher risk of cardiovascular disease in South Asians compared to Europeans in Norway and New Zealand? Two cohort studies

BMJ Open ◽

10.1136/bmjopen-2017-016819 ◽

2017 ◽

Vol 7 (12) ◽

pp. e016819 ◽

Cited By ~ 5

Author(s):

Kjersti S Rabanal ◽

Haakon E Meyer ◽

Grethe S Tell ◽

Jannicke Igland ◽

Romana Pylypchuk ◽

...

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Cardiovascular Disease ◽

New Zealand ◽

South Asians ◽

Excess Risk ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Increased Risk ◽

Traditional Risk Factors

ObjectivesThe objective was to prospectively examine potential differences in the risk of first cardiovascular disease (CVD) events between South Asians and Europeans living in Norway and New Zealand, and to investigate whether traditional risk factors could explain any differences.MethodsWe included participants (30–74 years) without prior CVD in a Norwegian (n=16 606) and a New Zealand (n=129 449) cohort. Ethnicity and cardiovascular risk factor information was linked with hospital registry data and cause of death registries to identify subsequent CVD events. We used Cox proportional hazards regression to investigate the relationship between risk factors and subsequent CVD for South Asians and Europeans, and to calculate age-adjusted HRs for CVD in South Asians versus Europeans in the two cohorts separately. We sequentially added the major CVD risk factors (blood pressure, lipids, diabetes and smoking) to study their explanatory role in observed ethnic CVD risk differences.ResultsSouth Asians had higher total cholesterol (TC)/high-density lipoprotein (HDL) ratio and more diabetes at baseline than Europeans, but lower blood pressure and smoking levels. South Asians had increased age-adjusted risk of CVD compared with Europeans (87%–92% higher in the Norwegian cohort and 42%–75% higher in the New Zealand cohort) and remained with significantly increased risk after adjusting for all major CVD risk factors. Adjusted HRs for South Asians versus Europeans in the Norwegian cohort were 1.57 (95% CI 1.19 to 2.07) in men and 1.76 (95% CI 1.09 to 2.82) in women. Corresponding figures for the New Zealand cohort were 1.64 (95% CI 1.43 to 1.88) in men and 1.39 (95% CI 1.11 to 1.73) in women.ConclusionDifferences in TC/HDL ratio and diabetes appear to explain some of the excess risk of CVD in South Asians compared with Europeans. Preventing dyslipidaemia and diabetes in South Asians may therefore help reduce their excess risk of CVD.

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Geographical profiles of cardiovascular risk and the risk factors in China: data from a nationwide population-based screening project

European Heart Journal ◽

10.1093/ehjci/ehaa946.2826 ◽

2020 ◽

Vol 41 (Supplement_2) ◽

Author(s):

C.Q Wu ◽

X Li ◽

J.P Lu ◽

B.W Chen ◽

Y.C Li ◽

...

Keyword(s):

Physical Activity ◽

Risk Factors ◽

Blood Pressure ◽

Population Based ◽

Staple Food ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Food Factor ◽

Rural And Urban ◽

Activity Factor

Abstract Background In China, an abundance of cardiovascular risk factors has contributed to the increasing prevalence of cardiovascular diseases (CVD), which caused almost 4 million deaths per year. However, comprehensive evidence on the geographical profiles of cardiovascular disease risk in China is lacking, as findings in prior studies have been limited to relatively small sample sizes, had incomplete regional coverage, or focused on a narrow risk factor spectrum. Purpose To compare the population CVD risk among different regions across China, and to describe the geographical distributions of CVD risk factors and their clusters throughout the nation. Methods In a nationwide population-based screening project covering 252 counties of China, standardized measurements were conducted to collect information on 12 major CVD risk factors. Individuals of high CVD risk were identified as those with previous CVD, or with a predicted 10-year risk of CVD greater than 10% according to the WHO risk prediction charts. We applied factor analysis to generate “clusters” that characterized the clustering of these risk factors, then explored their relationship with the local ambient temperature and per capital GDP. Results Among 983476 participants included, 9.2% were of high CVD risk, with a range of 1.6% to 23.6% across counties. Among the seven regions in China, the rate was relatively high in the Northeast (11.8%) and North China (10.4%), while low in the South China (7.2%) and Northwest (7.8%). We identified 6 clusters underlying CVD risk factors, including Obesity factor, Blood pressure factor, Staple food factor, Non-staple food factor, Smoking and alcohol factor, and Metabolic and physical activity factor (Figure). We found high risk regions were facing different leading challenges, like obesity and blood pressure for the North China, while unhealthy non-staple food for the Northeast. The South China, as the region with the lowest CVD risk, still had the highest prevalence of unhealthy staple food. Lower annual average ambient temperature was associated with higher risk in Blood pressure factor, Obesity factor and Non-staple food factor, but lower risk in Staple food factor and Metabolic and physical activity factor (p<0.001 for all), consistently between rural and urban. Higher per capital GDP was associated with lower risk in Non-staple food factor in urban and higher risk in Metabolic and physical activity factor in rural (p<0.05 for both). The correlation between per capital GDP and Smoking and alcohol factor differed significantly between in rural and urban regions (p=0.042). Conclusions The geographical profile of CVD risk in China is complex - population risk levels varied substantially across regions, which were contributed by different risk factors. China needs geographically targeted intervention strategies considering environmental and socio-economic factors to control CVD risk and reduce the burden related to CVD. Geographical disparity of risk clusters Funding Acknowledgement Type of funding source: Public grant(s) – National budget only. Main funding source(s): The National Key Research and Development Program from the Ministry of Science and Technology of China; the CAMS Innovation Fund for Medical Science

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Serum alanine aminotransferase activity and risk factors for cardiovascular disease in a Caucasian population: the Tromsø study

BMC Cardiovascular Disorders ◽

10.1186/s12872-020-01826-1 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Svein Ivar Bekkelund

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Alanine Aminotransferase ◽

Maximum Level ◽

Glycated Haemoglobin ◽

Caucasian Population ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Cross Sectional ◽

Serum Alanine Aminotransferase

Abstract Background High and low levels of serum alanine aminotransferase (ALT) are both associated with cardiovascular diseases (CVD) risks especially in elderly, but the mechanisms are less known. This study investigated associations between ALT and CVD risk factors including effects of sex and age in a Caucasian population. Methods Cross-sectional data were analysed sex-stratified in 2555 men (mean age 60.4 years) and 2858 women (mean age 60.0 years) from the population study Tromsø 6. Associations were assessed by variance analysis and multivariable logistic regression of odds to have abnormal ALT. Risk factors included body mass index (BMI), waist-to-hip-ratio, blood pressure, lipids, glucose, glycated haemoglobin and high-sensitive C-reactive protein (CRP). Results Abnormal elevated ALT was detected in 113 men (4.4%) and 188 women (6.6%). Most CVD risk factors associated positively with ALT in both sexes except systolic blood pressure and CRP (women only), while ALT was positively associated with age in men when adjusted for CVD risk factors, P < 0.001. BMI predicted ALT in men (OR 0.94; 95% CI 0.88–1.00, P = 0.047) and women (OR 0.90; 95% CI 0.86–0.95, P < 0.001). A linear inversed association between age and ALT in men and a non-linear inversed U-trend in women with maximum level between 60 and 64 years were found. Conclusion This study confirms a positive relationship between ALT and CVD risk factors, particularly BMI. Age is not a major confounder in the ALT-CVD relationship, but separate sex-analyses is recommended in such studies.

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Longitudinal association between CRP levels and risk of psychosis: a meta-analysis of population-based cohort studies

npj Schizophrenia ◽

10.1038/s41537-021-00161-4 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Emanuele F. Osimo ◽

Luke Baxter ◽

Jan Stochl ◽

Benjamin I. Perry ◽

Stephen A. Metcalf ◽

...

Keyword(s):

Cohort Studies ◽

Meta Analysis ◽

Random Effect ◽

Population Based ◽

Continuous Variable ◽

Cross Sectional ◽

Standard Deviation Increase ◽

Suspected Infection ◽

Longitudinal Association ◽

Incident Cases

AbstractMeta-analyses of cross-sectional studies suggest that patients with psychosis have higher circulating levels of C-reactive protein (CRP) compared with healthy controls; however, cause and effect is unclear. We examined the prospective association between CRP levels and subsequent risk of developing a psychotic disorder by conducting a systematic review and meta-analysis of population-based cohort studies. Databases were searched for prospective studies of CRP and psychosis. We obtained unpublished results, including adjustment for age, sex, body mass index, smoking, alcohol use, and socioeconomic status and suspected infection (CRP > 10 mg/L). Based on random effect meta-analysis of 89,792 participants (494 incident cases of psychosis at follow-up), the pooled odds ratio (OR) for psychosis for participants with high (>3 mg/L), as compared to low (≤3 mg/L) CRP levels at baseline was 1.50 (95% confidence interval [CI], 1.09–2.07). Evidence for this association remained after adjusting for potential confounders (adjusted OR [aOR] = 1.31; 95% CI, 1.03–1.66). After excluding participants with suspected infection, the OR for psychosis was 1.36 (95% CI, 1.06–1.74), but the association attenuated after controlling for confounders (aOR = 1.23; 95% CI, 0.95–1.60). Using CRP as a continuous variable, the pooled OR for psychosis per standard deviation increase in log(CRP) was 1.11 (95% CI, 0.93–1.34), and this association further attenuated after controlling for confounders (aOR = 1.07; 95% CI, 0.90–1.27) and excluding participants with suspected infection (aOR = 1.07; 95% CI, 0.92–1.24). There was no association using CRP as a categorical variable (low, medium or high). While we provide some evidence of a longitudinal association between high CRP (>3 mg/L) and psychosis, larger studies are required to enable definitive conclusions.

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Platelet function and cardiovascular risk in adult HIV-infected patients on HAART: a protocol for a systematic review and meta-analysis

BMJ Open ◽

10.1136/bmjopen-2017-019468 ◽

2017 ◽

Vol 7 (12) ◽

pp. e019468 ◽

Cited By ~ 2

Author(s):

Bongani Brian Nkambule ◽

Zibusiso Mkandla ◽

Tinashe Mutize ◽

Phiwayinkosi Vusi Dludla

Keyword(s):

Risk Factors ◽

Systematic Review ◽

Cardiovascular Risk ◽

Platelet Activation ◽

Meta Analysis ◽

People Living With Hiv ◽

Qualitative Synthesis ◽

Cvd Risk ◽

Increased Risk ◽

Statistical Heterogeneity

IntroductionThe incidence of cardiovascular disease (CVD) is now at least threefold higher in HIV-infected patients as compared with the general population. Although platelet activation and reactivity are implicated in the development of CVDs in HIV-infected patients, its precise role remains inconclusive. We aim to assess the association between platelet activation and selected cardiovascular risk factors in HIV-1-infected individuals on highly active antiretroviral treatment (HAART).MethodsThis will be a systematic review and meta-analysis of published studies evaluating the association between platelet activation and CVD risk factors in HAART-treated adults. The search strategy will include medical subject headings words for MEDLINE, and this will be adapted to Embase search headings (Emtree) terms for the EMBASE database. The search will cover literature published between 1 January 1996 to 30 April 2017. Studies will be independently screened by two reviewers using predefined criteria. Relevant eligible full texts will be screened; data will be extracted, and a qualitative synthesis will be conducted. Data extraction will be performed using Review Manager V.5.3. To assess the quality and strengths of evidence across selected studies, the Grading of Recommendations Assessment Development and Evaluation approach will be used. The Cochran’s Q statistic and the I2statistics will be used to analyse statistical heterogeneity between studies. If included studies show high levels of homogeneity, a random effects meta-analysis will be performed using R statistical software.Ethics and disseminationThis will be a review of existing studies and will not require ethical approval. The findings will be disseminated through peer-reviewed publication and presented at local and international conferences. An emerging patient management dilemma is that of the increased incidence of CVD in people living with HIV on HAART. This review may inform treatment and cardiovascular risk stratification of HIV-infected patients at increased risk of developing CVD.PROSPERO registration numberCRD42017062393.

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Abstract P052: Circulating Natural Killer Cells and Subclinical Cardiovascular Disease in the Multi-Ethnic Study of Atherosclerosis (MESA)

Circulation ◽

10.1161/circ.137.suppl_1.p052 ◽

2018 ◽

Vol 137 (suppl_1) ◽

Author(s):

Nancy S Jenny ◽

Nels C Olson ◽

Alicia M Ellis ◽

Margaret F Doyle ◽

Sally A Huber ◽

...

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Confidence Interval ◽

Systolic Blood Pressure ◽

Nk Cells ◽

Nk Cell ◽

Agatston Score ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Race Ethnicity

Introduction: Clinically, natural killer (NK) cells are important in inflammatory and autoimmune diseases. As part of innate immunity, NK cells produce chemokines and inflammatory cytokines, potentially linking them to cardiovascular disease (CVD) development and progression as well. However, their role in human CVD is not clear. Hypothesis: NK cells are proatherogenic in humans and are associated with CVD risk factors and subclinical CVD measures. Methods: We examined cross-sectional associations of circulating NK cell levels with CVD risk factors, subclinical CVD measures and coronary artery calcium (CAC) in 891 White, Black, Chinese and Hispanic men and women (mean age 66 y) in the Multi-Ethnic Study of Atherosclerosis (MESA) at Exam 4 (2005-07). NK cell percent, percent of circulating lymphocytes that were CD3 - CD56 + CD16 + , was measured in whole blood by flow cytometry. CAC presence was defined as Agatston score > 0. Results: Mean (standard deviation) NK percent differed by race/ethnicity; 8.2% (4.7) in Whites, 11.3% (7.5) in Chinese (p<0.001 compared to Whites), 7.1 (4.2) in Blacks (p=0.007) and 8.4 (5.2) in Hispanics (p=0.6). NK cell percent was positively associated with age (p<0.001) and systolic blood pressure (P=0.003) in the full group. However, NK cell percent was lower in current smokers than in never smokers (p=0.002). Adjusting for age, sex, race/ethnicity, smoking, body mass index, systolic blood pressure, diabetes and dyslipidemia, NK cell percent was negatively associated with common carotid intima media thickness (IMT; β coefficient -0.01; 95% confidence interval -0.03, -0.003) but was not associated with internal carotid IMT (-0.002; -0.037, 0.033). Likewise, NK cell percent was not associated with the presence of CAC (compared those with no detectable CAC; relative risk 1.02; 95% confidence interval 0.96, 1.08) or continuous Agatston score in those with a positive score (β coefficient 0.16, 95% confidence interval -0.003, 0.32) in the full group (models adjusted as above). Results were similar across race/ethnic groups. Conclusions: Of clinical interest, CD3 - CD56 + CD16 + NK cell percent varied significantly by race/ethnicity in these men and women from MESA. However, NK cell percent was inconsistently associated with CVD risk factors; positively with age and systolic blood pressure, and negatively with smoking. NK cell percent was also negatively associated with common carotid IMT. Larger sample sizes and longitudinal analyses will be required to clarify the potential relationship between NK cells and atherosclerosis in humans.

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Abstract P156: Assessing the Effect of the Heart of New Ulm Project: a Population-Based Program to Reduce Cardiovascular Disease

Circulation ◽

10.1161/circ.135.suppl_1.p156 ◽

2017 ◽

Vol 135 (suppl_1) ◽

Author(s):

Abbey C Sidebottom ◽

Arthur Sillah ◽

David M Vock ◽

Michael M Miedema ◽

Raquel Pereira ◽

...

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Cardiovascular Disease ◽

Health System ◽

Matched Control ◽

Population Based ◽

Control Population ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Matched Control Population

Background: Despite a highly recognized priority for public health and healthcare to implement population-level strategies to reduce the burden of cardiovascular disease (CVD), limited evidence exists on the most effective strategies. Data collection and evaluation of large scale, community based-prevention programs can be challenging and costly to achieve. The Heart of New Ulm (HONU) Project, begun in 2009, is a population-based initiative with healthcare, community, and workplace interventions addressing multiple levels of the social-ecological model designed to reduce modifiable CVD risk factors in rural New Ulm, MN. The community is served by one health system, enabling the use of electronic health record (EHR) data for surveillance. Objective: To assess trends for CVD risk factors, events, and healthcare utilization for New Ulm residents compared to a matched control population. Methods: We matched New Ulm residents (n = 4,077) with controls (n = 4,077) from a regional community served by the same health system using refined covariate balance techniques to match on baseline demographics, CVD risk factors, and health care utilization. Mixed effects longitudinal models with adjustment for age and gender, and an interaction for time by community, were run. Model based estimates were constructed for the entire cohort at each time period. Results: Over the first 6 years of the HONU Project,blood pressure, LDL, total cholesterol, and triglycerides were managed better in New Ulm than the matched comparison community. The proportion of New Ulm residents with controlled blood pressure increased by 6.2 percentage points while the control group increased by 2 points. 10-year ASCVD risk scores showed less decline for New Ulm residents than controls (16 vs. 18.4). The intervention and control groups did not differ with regard to inpatient stays, CVD events, smoking, or glucose. Conclusions: Compared to a matched control population, we found improved control of CVD risk factors in the New Ulm Population exposed to the HONU Project.

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Abstract 44: Cardiometabolic Responses to Weight Change are Different between Obese and Normal Weight Adults Who are Metabolically Healthy: The Atherosclerosis Risk in Communities Study

Circulation ◽

10.1161/circ.131.suppl_1.44 ◽

2015 ◽

Vol 131 (suppl_1) ◽

Author(s):

Zhaohui Cui ◽

Kimberly P Truesdale ◽

Patrick T Bradshaw ◽

Jianwen Cai ◽

June Stevens

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Weight Loss ◽

Weight Gain ◽

Weight Change ◽

Weight Maintenance ◽

Cvd Risk Factors ◽

Cvd Risk ◽

Obese Adults ◽

Metabolically Healthy

Introduction: The 2013 AHA/ACC/TOS Guideline for the Management of Overweight and Obesity in Adults recommended weight loss for obese adults in order to reduce their cardiovascular disease (CVD) risk. However, not all obese adults develop CVD and approximately 17% of obese Americans in the 1999-2004 NHANES were metabolically healthy. The absence of abnormal CVD risk factors in this subgroup of obese adults indicates that some individuals are resistant to excess adiposity and positive energy balance, and raises the question of whether all obese adults should be recommended for weight loss treatment. We know of no study that has examined whether metabolically healthy obese (MHO) adults respond to weight changes the same way as metabolically healthy normal weight adults (MHNW). Also, no study has compared the effects of weight loss, weight maintenance and weight gain on CVD risk factors in MHO adults. Hypothesis: We hypothesized that the effects of weight change would be different in MHNW and MHO adults, with MHO adults having less stable risk factors, and that weight loss has a protective effect on CVD risk factors in the MHO compared to weight maintenance and weight gain. Methods: Data were from 2,710 MHO and MHNW participants in the Atherosclerosis Risk in Communities (ARIC) study. Four examinations yielded 4,541 observations over sequential 3-year intervals. Metabolically healthy was defined as absence of all components of metabolic syndrome, excluding waist circumference, at the beginning of a 3-year interval. Mixed effect models were applied to individually compare changes in five CVD risk factors (systolic blood pressure, diastolic blood pressure, triglycerides, high-density lipoprotein cholesterol and glucose) in MHO and MHNW adults within 3 weight change categories (<3% weight loss, weight maintenance (±3%) and >3% weight gain). Results: Weight loss was associated with small or no changes in the five CVD risk factors in both MHO and MHNW adults. Weight maintenance was associated with larger increases in MHO compared to MHNW adults in triglycerides (mean ± standard error: 10.0±1.7 vs. 6.5±1.0 mg/dL) and glucose (1.7±0.4 vs. 0.9±0.2 mg/dL). Weight gain was associated with larger increases in systolic (8.6±0.6 vs. 6.2±0.4 mmHg) and diastolic (3.9±0.4 vs. 2.5±0.3 mmHg) blood pressure, triglycerides (22.0±1.8 vs. 16.0±1.1 mg/dL) and glucose (4.9±0.4 vs. 1.9±0.3 mg/dL) among the MHO compared to the MHNW. MHO weight losers experienced more favorable changes in the five CVD risk factors compared to MHO weight maintainers (p<0.04) or gainers (p<0.0001). Conclusions: We showed that compared to MHNW, MHO adults experienced similar changes in CVD risk factors with weight loss and larger increases with weight maintenance and gain. Our study supports the 2013 Guideline that primary health care providers should recommend weight loss treatment for MHO patients.

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