Abdominal Obesity and Endometrial Cancer in Egyptian Females With Postmenopausal Bleeding

Endometrial cancer is the most common type of female genital tract malignancies. We intended to assess the relation between different measures of obesity and the risk to develop endometrial cancer in Egyptian females with postmenopausal bleeding (PMB). The study was conducted in Alexandria, Egypt and included all postmenopausal females presenting to the University Hospital of Gynecology and Obstetrics with PMB within the study period (from January 1 to September 30). A questionnaire was completed, and data about anthropometric measurements including weight, height, and waist circumference were collected. Vaginal sonography, dilatation and curettage, and pathological examination were done by experts for all participants. Endometrial cancer was diagnosed in 38% of females presenting with PMB. Using ROC curve analysis, only the measure of abdominal obesity (waist circumference) showed significant accuracy in predicting endometrial cancer (area = 0.63, P < .05). The best cutoff point that maximizes accuracy was 88 cm. Body mass index (≥30 vs. ≤30) showed no significant relation (OR = 1.1, 95%CI 0.5–2.3), and the ratio between upper and lower body obesity (W/H ratio) showed border line significant relation (OR = 2, 95% CI 1–4.1), whereas waist circumference (≥88 vs. ≤88 cm) showed strikingly high OR (OR = 13.6, 95%CI 4–46.6). The risk of abdominal obesity on endometrial cancer remains very high (OR = 15.8, 95%CI 4.1–60.9) even after adjustment, in a logistic model, for other risk factors such as age at presentation, age at menarche, age at menopause, family history of malignancy, and gravidity. Abdominal obesity (waist circumference >88 cm) is the best measure of obesity to be used in predicting the risk of endometrial cancer in Egyptian females with PMB.     

Effect of adiposity and fat distribution on endometrial cancer risk in Shanghai women

The authors conducted a population-based case-control study of 832 endometrial cancer cases and 846 frequency-matched controls in Shanghai, China (1997-2001), to examine the association of overall adiposity and body fat distribution with disease risk. Overall adiposity was estimated using weight and body mass index (BMI); upper body fat distribution was evaluated using waist circumference and waist:hip ratio. Overall and upper-body obesity were both associated with an elevated risk of endometrial cancer. Adjusted odds ratios and 95% confidence intervals for highest-versus-lowest quartile comparisons were 2.6 (95% confidence interval (CI): 2.0, 3.5) for weight, 2.9 (95% CI: 2.2, 3.9) for BMI, 4.7 (95% CI: 3.4, 6.4) for waist circumference, and 3.5 (95% CI: 2.6, 4.8) for waist:hip ratio. The positive associations with weight and BMI vanished after results were controlled for waist circumference, while associations with waist circumference and waist:hip ratio persisted after adjustment for BMI. The positive association with upper-body obesity was more pronounced among younger women, women who had never used oral contraceptives, and women with a history of diabetes mellitus (p for multiplicative interaction < 0.05). Upper-body obesity was related to increased risk among women with low BMI. These results suggest that obesity, particularly upper-body fat deposition, is associated with an increased risk of endometrial cancer.     

脂肪重积聚提前与5岁儿童肥胖和代谢各指标关联的队列研究

目的探讨脂肪重积聚(adiposity rebound,AR)提前与5岁儿童肥胖和代谢各指标的关联。方法研究基于已经建立的"马鞍山市优生优育(MABC)",在2013年10月至2015年4月出生的单胎活产儿,连续追踪随访至5岁时的儿童,截至2019年8月份共获得有连续性儿童测量数据≥8次及代谢指标的有720例。采用体格检查以及实验室检测的方法,获得儿童出生情况、身长/身高、体重、腰围、人体成分、代谢指标等信息。使用χ2检验、F检验、t检验、非参数检验、一般线性模型和Logistic回归模型进行分析。结果已有43.47%学龄前儿童界定为AR提前(AR≤4岁)。控制性别后,AR提前组5岁儿童超重/肥胖(OR=2.71,95%CI:1.81~4.05)、腰围超标(OR=1.88,95%CI:1.25~2.82)、体脂肪百分比≥P90(OR=2.09,95%CI:1.26~3.48)的发生风险均上升,差异均有统计学意义(P<0.05);AR提前组5岁儿童胰岛素抵抗和代谢风险因子得分虽高于未提前组,但是差异无统计学意义。5岁儿童肥胖和超重的发生率分别为6.0%和12.8%,且超重肥胖儿童、腰围超标、腰高比超标和体脂百分比≥P90者,胰岛素抵抗和代谢风险因子得分均较高,差异均有统计学意义(P<0.001)。结论 AR提前能增加5岁超重/肥胖、腰围超标和体脂肪百分比超标的风险,且5岁儿童肥胖各指标超标与胰岛素抵抗和代谢风险因子密切相关。     

上海市杨浦区居民中心型肥胖与心血管疾病危险因素及聚集性的关系

【目的】探讨上海市杨浦区居民中心型肥胖与心血管疾病危险因素及聚集性的关系,为制定心血管疾病预防控制措施和策略提供科学依据。【方法】以社区为单位,对35~75岁居民进行问卷调查、体格检查和血生化检测,对其中资料完整的11321人进行数据分析。【结果】杨浦区居民中心型肥胖率为60.50%,标化率为56.09%。不同腰围人群的收缩压、舒张压、空腹血糖、总胆固醇、三酰甘油、低密度脂蛋白和高密度脂蛋白的差异均有统计学意义(均P<0.01)。随着腰围的增加,高血压、糖尿病、血脂异常及心血管病危险因素聚集比例均呈上升趋势(均P<0.01)。多因素logistic回归结果显示,轻度、重度中心型肥胖组发生高血压、糖尿病、血脂异常和危险因素聚集的风险是正常组的1.78(OR=1.78,95%CI:1.63~1.94)和3.36倍(OR=3.36,95%CI:3.00~3.75)、1.67(OR=1.67,95%CI:1.49~1.88)和2.67倍(OR=2.67,95%CI:2.34~3.03)、1.68(OR=1.68,95%CI:1.54~1.82)和2.20倍(OR=2.20,95%CI:1.97~2.44)、2.04(OR=2.04,95%CI:1.86~2.24)和3.62倍(OR=3.62,95%CI:3.23~4.04)。【结论】上海市杨浦区居民中心型肥胖患病率高,肥胖程度与心血管疾病危险因素及其聚集风险有关,应当及时采取控制肥胖的干预措施。     

The association between obesity and the prevalence of low back pain in young adults: the Cardiovascular Risk in Young Finns Study

Both low back pain (LBP) and obesity are common public health problems, yet their relation remains controversial. The aim of this study was to investigate the associations between weight-related factors and the prevalence of LBP in young adults in Finland. Participants in the ongoing Cardiovascular Risk in Young Finns Study aged 24-39 years were included (N = 2,575). In 2001, 31.2% of men and 39.5% of women reported LBP with recovery within a month or recurrent or continuous pain during the preceding 12 months. For women only, those with higher body mass index, waist circumference, hip circumference, waist-to-hip ratio, serum leptin level, and C-reactive protein level showed an increased prevalence of LBP. With all weight-related factors in the model, only waist circumference was related to LBP in women. For women, the odds ratios of LBP were 1.2 (95% confidence interval: 0.8, 1.8) for a waist circumference of 80-87.9 cm and 1.8 (95% confidence interval: 1.0, 3.2) for a waist circumference of > or =88 cm compared with a waist circumference of <80 cm. This association was independent of C-reactive protein, leptin, and adiponectin levels. The authors' findings in a relatively young population suggest that abdominal obesity may increase the risk of LBP in women.     

新疆农牧民静坐行为与心血管病风险的相关性研究

目的 探讨新疆农牧民静坐行为与心血管病风险的关系,为农牧民心血管病的防控提供依据。方法 2018年6月—2019年4月,完成新疆自然人群队列的基线调查,对其中农牧民的人口学信息、体力活动等进行分析,应用Framingham风险评分计算农牧民心血管病发生风险,并采用logistic回归模型,分析不同静坐行为与心血管病风险的关系;研究腰围和BMI的中介作用。结果 纳入农牧民12 528人,将静坐行为分为视屏静坐、阅读静坐和休闲娱乐静坐。经文化程度、地区、腹型肥胖、饮酒校正后,与总静坐时间<2h/d者相比,2～<3 h/d者和≥3 h/d者心血管病风险分别增加16.8%(OR=1.168,95%CI:1.003～1.359)和40.1%(OR=1.401,95%CI:1.201～1.634)。视屏静坐时间≥4 h/d者是心血管病风险的危险因素(OR=1.838,95%CI:1.346～2.509);阅读静坐时间≥2 h/d是心血管病风险的保护因素(OR=0.526,95%CI:0.420～0.660)。未发现休闲娱乐静坐时间与心血管病风险的相关性(χ²=0....     

Waist circumference, waist:hip ratio, and risk of breast cancer in the Nurses' Health Study

This study examined prospectively the associations of waist circumference and waist:hip circumference ratio with risk of breast cancer. A total of 47,382 US registered nurses who reported their waist and hip circumferences in 1986 were followed up through May 1994 for identification of incident cases of breast cancer. During 333,097 person-years of follow-up, 1,037 invasive breast cancers were diagnosed. In proportional hazards analyses, waist circumference was nonsignificantly related to risk of premenopausal breast cancer but was significantly associated with postmenopausal breast cancer after adjustment for established breast cancer risk factors (for the highest quintile of waist circumference vs. the lowest, relative risk (RR) = 1.34; 95% confidence interval (CI): 1.05, 1.72). When the analysis was limited to postmenopausal women who had never received hormone replacement therapy, a stronger positive association was found (RR = 1.88; 95% CI: 1.25, 2.85). After the data were further controlled for body mass index, the positive association was only slightly attenuated (RR = 1.83; 95% CI: 1.12, 2.99). Among past and current postmenopausal hormone users, no significant associations were found. Similar but slightly weaker associations were observed between waist:hip ratio and breast cancer risk. These data suggest that greater waist circumference increases risk of breast cancer, especially among postmenopausal women who are otherwise at lower risk because of never having used estrogen replacement hormones.     

Distribution of body fat and breast cancer: a case-control study in the South of Brazil

The scope of this study is to verify the association between body fat distribution and breast cancer in women in the state of Rio Grande do Sul, Brazil. Case-control methodology was used in this study, in which 100 women with a histopathological diagnosis of breast cancer were compared to an out-patient control group (400 women) between January and October 2005. The anthropometric variables collected were: body mass (kg), height, waist circumference (WC), and hip circumference. No association was found between the body mass index (BMI) and the waist/hip ratio (WHR) with the occurrence of breast cancer. In relation to WC, it was observed that women with a high measurement (≥ 88 cm) showed 2.08 times greater chance of developing the disease than those with normal or moderate measurements (< 80 cm-87 cm). When these women were grouped by (pre- and post-) menopausal state and anthropometric variables, only WC showed an adjusted OR association=3.15. The accumulation of fat in the upper part of the body (WC ≥ 88 cm) is a predisposing factor for breast cancer, especially in pre-menopausal women.     

中国中老年人群和高个成年人中心型肥胖的腰围界值点验证

目的 探讨中国中老年人群和高个成年人的适宜腰围界值点及其对糖尿病患病危险的预测价值.方法 利用2002年中国居民营养与健康状况调查数据,分析≥45岁人群和身高在全人群第85百分位数(P85)以上成年人的腰围分布特征,分析不同的腰同界值点与体重指数(BMI:kg/m2)≥24的诊断一致性,采用多元logistic回归分析不同腰围水平的调查对象患糖尿病和空腹血糖受损的相对风险,并以ROC曲线最短距离确定上述人群的适宜腰围界值点.结果 中国中老年人腰围男性均值为80.8 cm,女性均值为79.4 cm;高个男性腰围均值为84.1 cm,女性为77.9 cm.中老年人腰围以男性85 cm、女性80 cm作为界值点,与BMI≥24的诊断一致性最好,预测糖尿病的ROC曲线距离最短.与腰围<85 cm组相比,85 cm～组、90 cm～组和95 cm～组的中老年男性患糖尿病[OR值分别为2.1(95%CI:1.6～2.8)、3.0(95%CI:2.3～4.0)和4.5(95%CI:3.4～5.8)]和空腹血糖受损[OR值分别为1.6(95%CI:1.2～2.2)、2.6(95%CI:1.9～3.5)和3.5(95%CI:2.6～4.6)]的相对风险明显增加.与腰围<80 cm组相比,80 cm～组、85 cm～组和90 cm～组中老年女性患糖尿病[OR值分别为1.9(95% CI:1.4-2.6)、3.2(95%CI:2.4～4.3)和4.8(95%CI:3.7～6.1)]和空腹血糖受损[OR值分别为2.5(95%CI:1.8～3.4)、3.2(95%CI:2.4～4.4)和4.2(95%CI:3.2～5.6)]的相对风险明显增高.高个成年人腰围以男性90 cm、女性85 cm作为界值点,预测糖尿病患病的ROC曲线距离最短.与腰围<85 cm组相比,95cm～组高个男性患糖尿病和空腹血糖受损的相对风险明显增高[OR值分别为3.6(95%CI:2.1～6.4)和5.5(95%CI:3.0～10.1)].与腰围<80cm组相比,85 cm～、90 cm～组高个女性患糖尿病的相对风险明显升高[OR值分别为5.0(95%CI:2.7～9.4)和8.0(95%CI:4.6～14.1)],90 cm～组患空腹血糖受损的相对风险OR=3.7(95%CI:2.0～6.9).结论 男性85 cm和女性80 cm是中老年人群的适宜腰围界值点;对于高个成年人,此腰围界值点对于空腹血糖受损有预测价值;人群中心型肥胖预防指标建议使用男性85 cm和女性80 cm作为腰围界值点.     

Waist circumference as a measurement of obesity in the Netherlands Antilles; associations with hypertension and diabetes mellitus

OBJECTIVES: To evaluate waist circumference (WC) as a screening tool for obesity in a Caribbean population. To identify risk groups with a high prevalence of (central) obesity in a Caribbean population, and to evaluate associations between (central) obesity and self-reported hypertension and diabetes mellitus. DESIGN: Cross-sectional. SETTING: Population-based study. SUBJECTS: A random sample of adults (18 y or older) was selected from the Population Registries of three islands of the Netherlands Antilles. Response was over 80%. Complete data were available for 2025 subjects. INTERVENTION: A questionnaire and measurements of weight, height, waist and hip. MAIN OUTCOME MEASUREMENT: Central obesity indicator (WC > or =102 cm men, > or =88 cm women). RESULTS: WC was positively associated with age (65-74 y vs 18-24 y) in men (OR=7.7, 95% CI 3.4-17.4) and women (OR=6.4, 95% CI 3.2-12.7). Women with a low education had a higher prevalence of central obesity than women with a high education (OR=0.5, 95% CI 0.3-0.7). However, men with a high income had a higher prevalence of a central obesity than men with a low income (OR=1.7, 95% CI=1.1-2.6). WC was the strongest independent obesity indicator associated with self-reported hypertension (OR=1.7, 95% CI 1.4-2.0) and diabetes mellitus (OR=1.6, 95% CI 1.3-1.9). CONCLUSIONS: The identified risk groups were women aged 55-74 y, women with a low educational level and men with a high income. WC appears to be the major obesity indicator associated with hypertension and diabetes mellitus. SPONSORSHIP: Island Governments of Saba, St Eustatius and Bonaire, the Federal Government of the Netherlands Antilles, Dutch Directorate for Kingdom relationships.     

Association of total and central obesity with mortality in postmenopausal women with coronary heart disease

Overweight and abdominal obesity increase mortality risk, although the risk may be mediated by traditional cardiac risk factors. The authors assessed the association of baseline measures, change in overall body weight and abdominal obesity (waist circumference), and weight and waist circumference cycling with total mortality among postmenopausal women with known heart disease. They used data from 2,739 US women who participated in the Heart and Estrogen/progestin Replacement Study between 1993 and 2001. Over 6.8 years of follow-up, 498 women died. In adjusted Cox models that included either baseline waist circumference or body mass index (BMI), each was associated with mortality. However, after further adjustment for diabetes, hypertension, and lipoproteins, these associations disappeared. In models including both waist circumference and BMI, larger waist circumference (hazard ratio=1.40 per standard deviation, 95% confidence interval: 1.16, 1.68) was associated with increased risk and higher BMI (hazard ratio=0.81 per standard deviation, 95% confidence interval: 0.67, 0.97) was associated with decreased risk of total mortality, independent of cardiac risk factors. Weight and waist circumference cycling were not associated with mortality. Results show that both BMI and waist circumference are associated with mortality among postmenopausal women with established heart disease, but waist circumference may be more important than BMI, and their effects may be largely mediated by other cardiac risk factors.     

Screening for type 2 diabetes in a high-risk population: study design and feasibility of a population-based randomized controlled trial

ABSTRACT: BACKGROUND: We describe the design and present the results of the first year of a population-based study of screening for type 2 diabetes in individuals at high risk of developing the disease. High risk is defined as having abdominal obesity. METHODS: Between 2006 and 2007, 79,142 inhabitants of two Dutch municipalities aged 40--74 years were approached to participate in screening. Eligible participants had a self-reported waist circumference of [GREATER-THAN OR EQUAL TO]80 cm for women and [GREATER-THAN OR EQUAL TO]94 cm for men, and no known pre-existing diabetes. Of the respondents (n = 20,578; response rate 26%), 16,135 were abdominally obese. In total, 10,609 individuals gave written informed consent for participation and were randomized into either the screening (n = 5305) or the control arm (n = 5304). Participants in the screening arm were invited to have their fasting plasma glucose (FPG) measured and were referred to their general practitioner (GP) if it was [GREATER-THAN OR EQUAL TO]6.1 mmol/L. In addition, blood lipids were determined in the screening arm, because abdominal obesity is often associated with cardiovascular risk factors. Participants in both arms received written healthy lifestyle information. Between-group differences were analyzed with Chi-square tests (categorical variables) and unpaired t-tests (continuous variables). RESULTS: The screening attendance rate was 84.1%. Attending screening was associated with age at randomization (OR = 1.03, 95% CI 1.02-1.04), being married (OR = 1.57, 95%CI 1.33-1.83) and not-smoking currently (OR = 0.52, 95%CI 0.44-0.62). Of the individuals screened, 5.6% had hyperglycemia, and a further 11.6% had an estimated absolute cardiovascular disease risk of 5% or higher, according to the Systematic Coronary Risk Evaluation risk model. These participants were referred to their GP. CONCLUSIONS: Self-reported home-assessed waist circumference could feasibly detect persons at high risk of hyperglycemia or cardiovascular disease. Continuation of the large-scale RCT is warranted to test the hypothesis that targeted population-based screening for type 2 diabetes leads to a significant reduction in cardiovascular morbidity and mortality.Trial registrationISRCTN75983009.     

Interaction between smoking and obesity and the risk of developing breast cancer among postmenopausal women: the Women's Health Initiative Observational Study

Obesity is a well-established risk factor for postmenopausal breast cancer. Recent studies suggest that smoking increases the risk of breast cancer. However, the effect of co-occurrence of smoking and obesity on breast cancer risk remains unclear. A total of 76,628 women aged 50-79 years enrolled in the Women's Health Initiative Observational Study were followed through August 14, 2009. Cox proportional hazards regression models were used to estimate hazard ratios and 95% confidence intervals. Over an average 10.3 years of follow-up, 3,378 incident cases of invasive breast cancer were identified. The effect of smoking on the risk of developing invasive breast cancer was modified significantly by obesity status among postmenopausal women, regardless of whether the obesity status was defined by body mass index (P(interaction) = 0.01) or waist circumference (P(interaction) = 0.02). A significant association between smoking and breast cancer risk was noted in nonobese women (hazard ratio = 1.25, 95% confidence interval: 1.05, 1.47) but not in obese women (hazard ratio = 0.96, 95% confidence interval: 0.69, 1.34). In conclusion, this study suggests that the effect of smoking exposure on breast cancer risk was modified by obesity among postmenopausal women. The modification effect did not differ by general versus abdominal obesity.     

Dietary fat and risk of postmenopausal breast cancer in a 20-year follow-up

Dietary fat in midlife has not been associated with breast cancer risk in most studies, but few have followed women beyond one decade. The authors examined the relation of dietary fat, assessed by repeated questionnaires, to incidence of postmenopausal breast cancer in a cohort of 80,375 US women (3,537 new cases) prospectively followed for 20 years between 1980 and 2000. The multivariable relative risk for an increment of 5% of energy from total dietary fat intake was 0.98 (95% confidence interval: 0.95, 1.00). Additionally, specific types of fat were not associated with an increased risk of breast cancer. Furthermore, secondary analyses indicated no differences in breast cancer risk by estrogen receptor or progesterone receptor status. However, stratification by waist circumference indicated a significant decrease in breast cancer risk for participants with a waist circumference of 35 inches (88.9 cm) or greater (p-trend = 0.04). None of the latency intervals investigated were associated with an increased risk of breast cancer. In addition, fat intake before menopause was not related to risk of postmenopausal breast cancer. These results suggest a reduction in breast cancer risk for women with insulin resistance syndrome who consume high-fat diets and no association between specific sources of fat during midlife and risk of postmenopausal breast cancer.     

Evaluation of waist circumference to predict general obesity and arterial hypertension in women in Greater Metropolitan Belo Horizonte,Brazil

This study examined the capacity of waist circumference (WC) to identify subjects with overweight (BMI >/=25) and obesity (BMI >/=30), in agreement with internationally recommended levels of action. Data were obtained from 791 women, 15-59 years old. After identifying overweight and obesity according to WC values, sensitivity and specificity were calculated to verify whether WC could be a good risk predictor for hypertension. Associations were tested by linear regression and logistic regression, controlling for confounding. WC cut-off points of 80cm and 88cm correctly identified 89.8% and 88.5% of women with overweight and obesity, respectively. Abdominal obesity (WC >/=88cm) was statistically associated with hypertension in the multivariate analysis (OR = 2.88; 95% CI: 1.77-4.67). Hypertension was identified with a sensitivity of 63.8% and 42.8%, and with a specificity of 68.0% and 83.3%, for WC >/=80 and >/=88, respectively. The proposed cut-off points for abdominal obesity can potentially distinguish individuals at risk for future obesity, but has only moderate power to predict individuals with high blood pressure.     

上海市社区居民中心性肥胖与打鼾对血脂异常的交互作用

目的 探讨上海市社区居民中心性肥胖与打鼾对血脂异常的交互作用。方法 利用2017年上海市慢性病及其危险因素监测数据（SHCR-2017）,通过多阶段分层抽样,合计纳入研究对象20 259人,应用多因素logistic回归评价中心性肥胖与打鼾对血脂异常患病的影响。采用相乘交互、相加交互作用模型评估中心性肥胖和打鼾对血脂异常患病的交互作用。结果 上海市血脂异常检出率为35.5%,高甘油三酯血症（18.2%）和低高密度脂蛋白胆固醇血症（15.8%）为主要特征。经混杂因素调整后,中心性肥胖（OR=1.74,95%CI:1.63～1.85)与打鼾（OR=1.16,95%CI:1.09～1.24）均与血脂异常相关。交互作用分析表明,中心性肥胖与打鼾对血脂异常患病无显著相乘交互作用（OR=0.98,95%CI:0.87～1.11）。两者对血脂异常患病存在相加交互作用（RERI=2.21,95%CI:1.61～2.81;SI=3.40,95%CI:3.07～3.78;AP=0.54,95%CI:0.49～0.58）。血脂异常四种临床类型中,研究对象对高甘油三酯血症、低高密度脂蛋白胆固醇血症患病的相加交...     

儿童肥胖对高血压发病率影响的随访研究

目的 探讨儿童肥胖状态及肥胖状态的改变对其高血压发病率的影响.方法 采取前瞻队列研究的方法,抽取2004年北京市儿童青少年代谢综合征队列人群中2189名6～16岁血压正常儿童,于2010年12月对其随访,进行身高、腰围(WC)、体重和血压的测量.分别以体质指数(BMI)和WC作为评价超重、肥胖、腹型肥胖的指标.以不同肥胖状态组设置哑变量,以随访时点是否高血压作为结局变量,进行非条件logistic回归分析,分析基线肥胖状态及肥胖状态的改变与高血压发病率之间的关系,并计算相应的OR值及95%CI值.结果 共完成了1184名在校学生的随访,6年间高血压累积发病率为19.9%(236/1184).男性高血压发病率(23.2%,149/643)高于女性(16.1%,87/541) (χ2=9.257,P=0.002).基线非超重组、超重组、肥胖组随访期间高血压累积发病率分别为8.7%(45/519)、19.3%(35/181)、32.4%(156/484)(χ2=9.332,P<0.001),基线非肥胖组与腹型肥胖组随访期间高血压累积发病率分别为10.3%(63/613)、30.7%(173/567) (χ2=77.753,P<0.001).基线肥胖组的高血压发病危险高于基线非超重组(BMI:OR=4.9,95%CI:3.4～7.0)和基线非肥胖组(WC:OR=3.9,95%CI:2.8～5.3);基线时BMI、WC水平相同时,随访时BMI、WC水平增加,高血压发病危险增加.控制年龄、性别,基线BMI和WC每增加1 kg/m2和1 cm,高血压发病风险分别增加0.21和0.07倍,OR(95%CI)值分别为1.21(1.16～1.26)和1.07(1.05～1.09);随访时BMI和WC改变量每增加1 kg/m2和1 cm,高血压发病风险分别增加0.16和0.05倍,OR(95%CI)值分别为1.16(1.11～1.22) 和1.05(1.03～1.07).结论 儿童肥胖及肥胖水平升高的改变会增加其高血压发病风险.

Abstract：

Objective To explore the impact of obesity level and the level change in childhood on hypertension incidence.Methods A perspective cohort study was conducted.As part of Beijing Child and Adolescent Metabolic Syndrome Study,2189 aged 6-16 year non-hypertensive children was followed up in December,2010.In this study,height,weight,waist circumference (WC) and blood pressure was measured at follow-up,and body mass index (BMI) and WC was respectively used to assess overweight,obesity and abdominal obesity.Non-conditional logistic regression was used to evaluate the association between baseline obesity status, change of obesity status and hypertension incidence. OR and 95%CI were computed in the model using obese status as dummy variable and hypertension at follow up visit as dependent variable.Results The total hypertension incidence of 1184 subjects during 6 years follow-up was 19.9%(236/1184).The hypertension incidence in male (23.2%,149/643) was higher than that in female (16.1%,87/541) (χ2=9.257,P=0.002).The hypertension incidence of non-overweight,overweight and obese children at baseline was 8.7%(45/519),19.3%(35/181) and 32.4%(156/484)respectively (χ2=9.332,P<0.001),and the incidence of non-obese and abdominal obese children at baseline was respectively 10.3%(63/613) and 30.7%(173/567) (χ2=77.753,P<0.001).Hypertension incidence in the baseline obesity group was higher than the non-overweight (BMI:OR=4.9,95%CI:3.4-7.0) and non-obese group (WC:OR=3.9,95%CI: 2.8-5.3).The hypertension incidence increased with the follow-up BMI/WC level,based on the same baseline level of BMI and WC.The hypertension risk increased to 0.21 and 0.07 times respectively with elevation of baseline BMI level by 1 kg/m2 and WC level by 1 cm,and OR(95%CI) were 1.21(1.16-1.26) and 1.07(1.05-1.09),respectively.Similarly,the hypertension risk increased 0.16 and 0.05 times respectively with the elevation of BMI level change by 1 kg/m2 and 1 cm,and OR (95%CI) were 1.16(1.11-1.22) and 1.05(1.03-1.07),respectively.Conclusion Obesity and increased obesity level change in childhood can increase the risk of incident hypertension.     

肥胖指标与糖尿病和高血压的关联分析

目的分析肥胖指标与糖尿病和高血压之间的关系。方法以2006年广西南宁市体检人群,共6031人为研究对象,分别检测体质指数（BMI）、腰围（WC）、腰围与身高的比值（WHtR）、空腹血糖（FBG）、餐后血糖（PBG）与血压,并对肥胖指标与糖尿病和高血压的关联性进行分析。结果糖尿病风险值,男性BMI：OR=1．290,95％CI：1．005～1．655,WC：OR=1．494,95％Ch1．159～1．927,WHtR：OR=1．565,95％Ch1．216～2．016;女性BMI：OR=2．337,95％CI：1．538～3．550,WC：OR=2．559,95％CI：1．686-3．883,WHtR：OR=3．102,95％CI：1．966～4．892。高血压风险值,男性BMI：OR=1．793,95％CI：1．529～2．103,WC：OR=2．077,95％CI：1．768～2．440,WHtR：OR=2．332,95％CI：1．976～2．725;女性BMI：OR=2．877,95％CI：2．228-3．714,WC：OR=2．896,95％CI：2．243～3．738,WHtR：OR=3．838,95％CI：2．897～5．116。不论男女,高血压和糖尿病与肥胖指标的关联强度顺序为WHtR〉WC〉BMI。结论与外周肥胖指标相比,中心型肥胖人群患糖尿病、高血压的风险更高。     

Excess weight and abdominal obesity in postmenopausal Brazilian women: a population-based study

Background

The menopause is associated with a tendency to gain weight. Several alterations in fat deposits occur, leading to changes in the distribution of body fat. There are strong indications that, in middle age, obesity is associated with increased mortality. This study set out to determine the factors associated with the prevalence of overweight and abdominal obesity in postmenopausal women in a population-based study in Brazil.

Methods

The sample included 456 women, aged 45–69 years, residing in the urban area of Maringa, Parana. Systematic sampling, with a probability proportional to the size of the census sector, was performed. Behavioral, economic, and sociodemographic data were collected, and body mass index (BMI) and waist circumference (WC) were determined.

Results

According to BMI criteria (≥25.0 kg/m²), 72.6% of the women were overweight, and according to WC (≥88 cm), 63.6% had abdominal obesity. Based on logistic regression analysis, the factors that were most closely associated with overweight were: having three or more children (odds ratio (OR): 1.78; 95% confidence interval (CI): 1.06–3.00); and not taking hormone replacement therapy (OR: 1.69; 95% CI: 1.06–2.63). The prevalence of abdominal obesity was positively associated with greater parity (OR: 1.34, 95% CI: 1.05–1.72) and age older than 65 years (OR: 1.50; 95% CI: 1.03–2.19).

Conclusions

This study found that the prevalences of overweight and abdominal obesity were higher for postmenopausal women who had three or more children. Age over 65 years was also a risk factor for abdominal obesity and no use of hormonal replacement therapy was a risk factor for overweight.

     

Cross-sectional versus prospective associations of sleep duration with changes in relative weight and body fat distribution: the Whitehall II Study

A cross-sectional relation between short sleep and obesity has not been confirmed prospectively. The authors examined the relation between sleep duration and changes in body mass index and waist circumference using the Whitehall II Study, a prospective cohort of 10,308 white-collar British civil servants aged 35-55 years in 1985-1988. Data were gathered in 1997-1999 and 2003-2004. Sleep duration and other covariates were assessed. Changes in body mass index and waist circumference were assessed between the two phases. The incidence of obesity (body mass index: > or =30 kg/m(2)) was assessed among nonobese participants at baseline. In cross-sectional analyses (n = 5,021), there were significant, inverse associations (p < 0.001) between duration of sleep and both body mass index and waist circumference. Compared with 7 hours of sleep, a short duration of sleep (< or =5 hours) was associated with higher body mass index (beta = 0.82 units, 95% confidence interval (CI): 0.38, 1.26) and waist circumference (beta = 1.88 cm, 95% CI: 0.64, 3.12), as well as an increased risk of obesity (odds ratio(adjusted) = 1.65, 95% CI: 1.22, 2.24). In prospective analyses, a short duration of sleep was not associated with significant changes in body mass index (beta = -0.06, 95% CI: -0.26, 0.14) or waist circumference (beta = 0.44, 95% CI: -0.23, 1.12), nor with the incidence of obesity (odds ratio(adjusted) = 1.05, 95% CI: 0.60, 1.82). There is no temporal relation between short duration of sleep and future changes in measures of body weight and central adiposity.