Effects of Initial Body Mass Index and Weight Change on All-Cause Mortality: A 10-Year Cohort Study in Korea

We evaluated the effects of baseline body mass index (BMI) and its changes over 4 years on all-cause mortality in Korean population. We analyzed 351 735 participants whose BMI was measured in both 2002/2003 and 2006/2007. Mortality was assessed until 2013. Multivariate hazard ratios for all-cause mortality were estimated. Underweight and severe obesity with BMI >30 kg/m2 were significantly associated with higher mortality. Similarly, >5% decrease or >10% increase of BMI for 4 years was associated with the increased risk of death. Comparing the results between baseline BMI and BMI change, the BMI change showed more stable associations with mortality than the baseline BMI in subgroup analysis such as nonsmokers and healthy participants. This study suggests that BMI change could be a useful health indicator along with obesity level by BMI. In addition, maintaining a healthy weight is needed for longevity, but rapid weight change should be carefully monitored.

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Inverse association between body mass index and all-cause mortality in rural chinese adults: 15-year follow-up of the Anqing cohort study

BMJ Open ◽

10.1136/bmjopen-2020-045495 ◽

2021 ◽

Vol 11 (8) ◽

pp. e045495

Author(s):

Jie Yang ◽

Nannan Cheng ◽

Yue Zhang ◽

Lijing Ye ◽

Jingyi Li ◽

...

Keyword(s):

Body Mass Index ◽

Cohort Study ◽

Body Mass ◽

Rural Population ◽

Inverse Association ◽

Risk Of Death ◽

All Cause Mortality ◽

Baseline Bmi ◽

High Bmi

ObjectiveTo investigate the association between body mass index (BMI) and all-cause mortality in a Chinese rural population.DesignProspective cohort study.SettingThis study was conducted from 2003 to 2018 in Anqing, Anhui Province, China.Participants17 851 participants aged 25–64 years (49.4% female) attending physical examinations and questionnaire were included in this study. The inclusion criterion was families having a minimum of three participating siblings. The exclusion criteria included participants without family number and BMI data at baseline.Outcome measuresThe outcome measure was all-cause mortality. Generalized estimating equation (GEE) regression analysis was performed to determine the association between baseline BMI and all-cause mortality.ResultsDuring a mean follow-up period of 14.1 years, 730 deaths (8.0%) occurred among men, and 321 deaths (3.6%) occurred among women. The mean BMI for males was 21.3±2.5 kg/m2, and for female it was 22.1±3.1 kg/m2. Baseline BMI was significantly inversely associated with all-cause mortality risk for per SD increase (OR, 0.79 (95% CI, 0.72 to 0.87) for males; OR, 0.88 (95% CI, 0.76 to 1.01) for females). When BMI was stratified with cut points at 20 and 24 kg/m2, compared with the low BMI group, a significantly lower risk of death was found in the high BMI group (BMI ≥24: OR, 0.57 (95% CI, 0.43 to 0.77) in males; 0.65 (95% CI, 0.46 to 0.93) in females) after adjustment for relevant factors.ConclusionsIn this relatively lean rural Chinese population, the risk of all-cause mortality decreased with increasing BMI. The excess risk of all-cause mortality associated with a high BMI was not seen among this rural population.

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Associations Between Physical Activity and Incident Hypertension Across Strata of Body Mass Index: A Prospective Investigation in a Large Cohort of French Women

Journal of the American Heart Association ◽

10.1161/jaha.119.015121 ◽

2020 ◽

Vol 9 (23) ◽

Author(s):

Conor‐James MacDonald ◽

Anne‐Laure Madika ◽

Martin Lajous ◽

Nasser Laouali ◽

Fanny Artaud ◽

...

Keyword(s):

Physical Activity ◽

Body Mass Index ◽

Body Mass ◽

High Body Mass Index ◽

Healthy Weight ◽

Cox Models ◽

Hazard Ratios ◽

Increased Risk ◽

Diet History Questionnaire ◽

Diet History

Background High body mass index (BMI) and low physical activity are associated with increased risk of hypertension. Few studies have assessed their joint impact or the relation of physical activity and hypertension among individuals within a healthy BMI range. The objective of this study was to investigate the associations between physical activity and hypertension across strata of BMI. Methods and Results We used data from the E3N (Etude Epidémiologique de femmes de la Mutuelle Générale de l´Education) cohort, a French prospective study of women aged 40 to 65 years. We included participants who completed a diet history questionnaire and who did not have prevalent hypertension at baseline, resulting in a total of 41 607 women. Questionnaires assessed time spent undertaking various types of physical activity. Hypertension cases were self‐reported. Cox models were used to calculate hazard ratios (HRs) for physical activity. Associations were assessed over strata of BMI. Among the 41 607 included women, 10 182 cases of hypertension were identified in an average follow‐up time of 14.5 years. Total physical activity was associated with a lower hypertension risk in women within the high‐normal BMI range (BMI, 22.5–24.9) (HR Quartile 1–Quartile 4 , 0.89; 95% CI, 0.79–0.99). An inverse relationship was observed between sports (HR sports >2 hours , 0.87; 95% CI, 0.83–0.93), walking (HR walk >6.5 hours , 0.94; 95% CI, 0.90–1.00), and gardening (HR gardening >2.5 hours , 0.94; 95% CI, 0.89–0.99). Sports were associated with a reduced risk of hypertension in women with a healthy weight, but evidence was weaker in overweight/obese or underweight women. Conclusions Women with a healthy weight were those who could benefit most from practicing sports, and sports provided the largest risk reduction compared with other types of activity.

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Postdiagnosis Body Mass Index, Weight Change, and Mortality From Prostate Cancer, Cardiovascular Disease, and All Causes Among Survivors of Nonmetastatic Prostate Cancer

Journal of Clinical Oncology ◽

10.1200/jco.19.02185 ◽

2020 ◽

Vol 38 (18) ◽

pp. 2018-2027 ◽

Cited By ~ 3

Author(s):

Alyssa N. Troeschel ◽

Terryl J. Hartman ◽

Eric J. Jacobs ◽

Victoria L. Stevens ◽

Ted Gansler ◽

...

Keyword(s):

Prostate Cancer ◽

Cardiovascular Disease ◽

Body Mass Index ◽

Weight Gain ◽

Body Mass ◽

Weight Change ◽

Cox Proportional Hazards ◽

Healthy Weight ◽

All Cause Mortality

PURPOSE To investigate the association of postdiagnosis body mass index (BMI) and weight change with prostate cancer–specific mortality (PCSM), cardiovascular disease–related mortality (CVDM), and all-cause mortality among survivors of nonmetastatic prostate cancer. METHODS Men in the Cancer Prevention Study II Nutrition Cohort diagnosed with nonmetastatic prostate cancer between 1992 and 2013 were followed for mortality through December 2016. Current weight was self-reported on follow-up questionnaires approximately every 2 years. Postdiagnosis BMI was obtained from the first survey completed 1 to < 6 years after diagnosis. Weight change was the difference in weight between the first and second postdiagnosis surveys. Deaths occurring within 4 years of the follow-up were excluded to reduce bias from reverse causation. Analyses of BMI and weight change included 8,330 and 6,942 participants, respectively. RESULTS Postdiagnosis BMI analyses included 3,855 deaths from all causes (PCSM, n = 500; CVDM, n = 1,155). Using Cox proportional hazards models, hazard ratios (HRs) associated with postdiagnosis obesity (BMI ≥ 30 kg/m2) compared with healthy weight (BMI 18.5 to < 25.0 kg/m2) were 1.28 for PCSM (95% CI, 0.96 to 1.67), 1.24 for CVDM (95% CI, 1.03 to 1.49), and 1.23 for all-cause mortality (95% CI, 1.11 to 1.35). Weight gain analyses included 2,973 deaths (PCSM, n = 375; CVDM, n = 881). Postdiagnosis weight gain (> 5% of body weight), compared with stable weight (± < 3%), was associated with a higher risk of PCSM (HR, 1.65; 95% CI, 1.21 to 2.25) and all-cause mortality (HR, 1.27; 95% CI, 1.12 to 1.45) but not CVDM. CONCLUSION Results suggest that among survivors of nonmetastatic prostate cancer with largely localized disease, postdiagnosis obesity is associated with higher CVDM and all-cause mortality, and possibly higher PCSM, and that postdiagnosis weight gain may be associated with a higher mortality as a result of all causes and prostate cancer.

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Frequency of Genital Infections According to Body Mass Index in Dapagliflozin-treated Patients with Type 2 Diabetes Mellitus

Experimental and Clinical Endocrinology & Diabetes Reports ◽

10.1055/s-0043-101823 ◽

2017 ◽

Vol 04 (01) ◽

pp. e1-e4

Author(s):

Gottfried Rudofsky ◽

Tanja Haenni ◽

John Xu ◽

Eva Johnsson

Keyword(s):

Type 2 Diabetes ◽

Body Mass Index ◽

Body Mass ◽

The Body ◽

Baseline Body Mass Index ◽

Obese Patients ◽

Genital Infections ◽

Increased Risk ◽

Three Body

Abstract Genital infections are associated with sodium glucose co-transporter 2 inhibitors such as dapagliflozin. Since patients with Type 2 diabetes are at increased risk of genital infections, and obesity is a risk factor for infections, obese patients with Type 2 diabetes could be more susceptible to genital infections when treated with sodium glucose co-transporter 2 inhibitors. This pooled dataset assessed the frequency of genital infections according to baseline body mass index in patients treated with dapagliflozin 10 mg. Data were pooled from 13 studies of up to 24 weeks’ duration (dapagliflozin N=2 360; placebo N=2 295). Frequency of genital infections was compared between three body mass index subgroups (<30, ≥30−< 35 and ≥35 kg/m2). Genital infections were reported in 130 (5.5%) patients receiving dapagliflozin and 14 (0.6%) patients receiving placebo; none of which were serious. Genital infections were more common in women (84/130 [64.6%]) than in men (46/130 [35.4%]) treated with dapagliflozin. In the body mass index < 30, ≥ 30−< 35 and ≥ 35 kg/m2 dapagliflozin-treated subgroups, 38/882 (4.3%), 47/796 (5.9%) and 45/682 (6.6%) patients presented with genital infections, respectively. Although the frequency was low overall and relatively similar between subgroups, there was a trend towards an increase in genital infections in patients with a higher body mass index. This trend is unlikely to be clinically relevant or to affect suitability of dapagliflozin as a treatment option for obese patients with Type 2 diabetes, but rather should influence advice and counselling of overweight patients on prevention and treatment of genital infections.

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The Risks of Cardiovascular Disease and Mortality Following Weight Change in Adults with Diabetes: Results from ADVANCE

The Journal of Clinical Endocrinology & Metabolism ◽

10.1210/clinem/dgz045 ◽

2019 ◽

Vol 105 (1) ◽

pp. 152-162 ◽

Cited By ~ 1

Author(s):

Alexandra K Lee ◽

Mark Woodward ◽

Dan Wang ◽

Toshiaki Ohkuma ◽

Bethany Warren ◽

...

Keyword(s):

Type 2 Diabetes ◽

Weight Loss ◽

Weight Change ◽

Cox Regression ◽

Lifestyle Changes ◽

Baseline Body Mass Index ◽

Diabetes Medication ◽

Increased Risk ◽

All Cause Mortality

Abstract Context Weight loss is strongly recommended for overweight and obese adults with type 2 diabetes. Unintentional weight loss is associated with increased risk of all-cause mortality, but few studies have examined its association with cardiovascular outcomes in patients with diabetes. Objective To evaluate 2-year weight change and subsequent risk of cardiovascular events and mortality in established type 2 diabetes. Design and Setting The Action in Diabetes and Vascular Disease: Preterax and Diamicron-MR Controlled Evaluation was an international, multisite 2×2 factorial trial of intensive glucose control and blood pressure control. We examined 5 categories of 2-year weight change: >10% loss, 4% to 10% loss, stable (±<4%), 4% to 10% gain, and >10% gain. We used Cox regression with follow-up time starting at 2 years, adjusting for intervention arm, demographics, cardiovascular risk factors, and diabetes medication use from the 2-year visit. Results Among 10 081 participants with valid weight measurements, average age was 66 years. By the 2-year examination, 4.3% had >10% weight loss, 18.4% had 4% to 10% weight loss, and 5.3% had >10% weight gain. Over the following 3 years of the trial, >10% weight loss was strongly associated with major macrovascular events (hazard ratio [HR], 1.75; 95% confidence interval [CI], 1.26-2.44), cardiovascular mortality (HR, 2.76; 95% CI, 1.87-4.09), all-cause mortality (HR, 2.79; 95% CI, 2.10-3.71), but not major microvascular events (HR, 0.91; 95% CI, 0.61-1.36), compared with stable weight. There was no evidence of effect modification by baseline body mass index, age, or type of diabetes medication. Conclusions In the absence of substantial lifestyle changes, weight loss may be a warning sign of poor health meriting further workup in patients with type 2 diabetes.

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The association of dialysis adequacy, body mass index, and mortality among hemodialysis patients

BMC Nephrology ◽

10.1186/s12882-019-1570-0 ◽

2019 ◽

Vol 20 (1) ◽

Cited By ~ 2

Author(s):

Woong-pyo Hong ◽

Yu-Ji Lee

Keyword(s):

Body Mass Index ◽

Body Mass ◽

Mortality Risk ◽

Cox Regression ◽

Target Range ◽

Dialysis Adequacy ◽

Cox Regression Analysis ◽

Increased Risk ◽

All Cause Mortality ◽

High Bmi

Abstract Background Although hemodialysis (HD) adequacy, single-pool Kt/Vurea (spKt/V), is inversely correlated with body size, each is known to affect patient survival in the same direction. Therefore, we sought to examine the relationship between HD adequacy and mortality according to body mass index (BMI) in HD patients and explore a combination effect of BMI and HD adequacy on mortality risk. Methods We retrospectively reviewed patient data from the Korean Society of Nephrology registry, a nationwide database of medical records of HD patients, from January 2001 to June 2017. We included patients ≥18 years old who were receiving maintenance HD. Patients were categorized into three groups according to baseline BMI (< 20 (low), 20 to < 23 (normal), and ≥ 23 (high) kg/m2). Baseline spKt/V was divided into six categories. Results Among 18,242 patients on HD, the median follow-up duration was 5.2 (IQR, 1.9–8.9) years. Cox regression analysis showed that, compared to the reference (spKt/V 1.2–1.4), lower and higher baseline spKt/V were associated with greater and lower risks for all-cause mortality, respectively. However, among patients with high BMI (n = 5588), the association between higher spKt/V and lower all-cause mortality was attenuated in all adjusted models (Pinteraction < 0.001). Compared to patients with normal BMI and spKt/V within the target range (1.2–1.4), those with low BMI had a higher risk for all-cause mortality at all spKt/V levels. However, the gap in mortality risk became narrower for higher values of spKt/V. Compared to patients with normal BMI and spKt/V in the target range, those with high BMI and spKt/V < 1.2 were not at increased risk for mortality despite low dialysis adequacy. Conclusions The association between spKt/V and mortality in HD patients may be modified by BMI.

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Baseline prognostic nutritional index and changes in pretreatment body mass index associate with immunotherapy response in patients with advanced cancer

Journal for ImmunoTherapy of Cancer ◽

10.1136/jitc-2020-001674 ◽

2020 ◽

Vol 8 (2) ◽

pp. e001674

Author(s):

Paul Johannet ◽

Amelia Sawyers ◽

Yingzhi Qian ◽

Samuel Kozloff ◽

Nicholas Gulati ◽

...

Keyword(s):

Body Mass Index ◽

Nutritional Status ◽

Body Mass ◽

Advanced Cancer ◽

Objective Response ◽

Prognostic Nutritional Index ◽

Baseline Body Mass Index ◽

New York University ◽

Nutritional Index ◽

Baseline Bmi

BackgroundRecent research suggests that baseline body mass index (BMI) is associated with response to immunotherapy. In this study, we test the hypothesis that worsening nutritional status prior to the start of immunotherapy, rather than baseline BMI, negatively impacts immunotherapy response.MethodsWe studied 629 patients with advanced cancer who received immune checkpoint blockade at New York University. Patients had melanoma (n=268), lung cancer (n=128) or other primary malignancies (n=233). We tested the association between BMI changes prior to the start of treatment, baseline prognostic nutritional index (PNI), baseline BMI category and multiple clinical end points including best overall response (BOR), objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS) and overall survival (OS).ResultsDecreasing pretreatment BMI and low PNI were associated with worse BOR (p=0.04 and p=0.0004), ORR (p=0.01 and p=0.0005), DCR (p=0.01 and p<0.0001), PFS (p=0.02 and p=0.01) and OS (p<0.001 and p<0.001). Baseline BMI category was not significantly associated with any treatment outcomes.ConclusionStandard of care measures of worsening nutritional status more accurately associate with immunotherapy outcomes than static measurements of BMI. Future studies should focus on determining whether optimizing pretreatment nutritional status, a modifiable variable, leads to improvement in immunotherapy response.

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The Association Between Body Mass Index and Pancreatic Cancer: Variation by Age at Body Mass Index Assessment

American Journal of Epidemiology ◽

10.1093/aje/kwz230 ◽

2019 ◽

Vol 189 (2) ◽

pp. 108-115 ◽

Cited By ~ 2

Author(s):

Eric J Jacobs ◽

Christina C Newton ◽

Alpa V Patel ◽

Victoria L Stevens ◽

Farhad Islami ◽

...

Keyword(s):

Pancreatic Cancer ◽

Body Mass Index ◽

Confidence Interval ◽

Body Mass ◽

Proportional Hazards ◽

Middle Age ◽

Epidemiologic Studies ◽

Excess Weight ◽

Hazard Ratios ◽

Increased Risk

Abstract Higher body mass index (BMI; weight (kg)/height (m)2) is associated with increased risk of pancreatic cancer in epidemiologic studies. However, BMI has usually been assessed at older ages, potentially underestimating the full impact of excess weight. We examined the association between BMI and pancreatic cancer mortality among 963,317 adults who were aged 30–89 years at their enrollment in Cancer Prevention Study II in 1982. During follow-up through 2014, a total of 8,354 participants died of pancreatic cancer. Hazard ratios per 5 BMI units, calculated using proportional hazards regression, declined steadily with age at BMI assessment, from 1.25 (95% confidence interval: 1.18, 1.33) in persons aged 30–49 years at enrollment to 1.13 (95% confidence interval: 1.02, 1.26) in those aged 70–89 years at enrollment (P for trend = 0.005). On the basis of a hazard ratio of 1.25 per 5 BMI units at age 45 years, we estimated that 28% of US pancreatic cancer deaths among persons born in 1970–1974 will be attributable to BMI ≥25.0—nearly twice the equivalent proportion of those born in the 1930s, a birth cohort with much lower BMI in middle age. These results suggest that BMI before age 50 years is more strongly associated with pancreatic cancer risk than BMI at older ages, and they underscore the importance of avoiding excess weight gain before middle age for preventing this highly fatal cancer.

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