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  • 1
    Keywords: CANCER ; tumor ; FOLLOW-UP ; COHORT ; RISK ; RISKS ; TUMORS ; colon ; ASSOCIATION ; ENERGY ; WOMEN ; etiology ; MEN ; COLORECTAL-CANCER ; cancer risk ; COLON-CANCER ; DOSE-RESPONSE ; UNITED-STATES ; BODY ; body mass index ; nutrition ; dietary fiber ; LEISURE-TIME ; physical activity ; RECTAL-CANCER ; MASS INDEX ; ASSOCIATIONS ; colon cancer ; PHYSICAL-ACTIVITY ; INTERVAL ; PARTICIPANTS ; BODY-MASS INDEX ; ENERGY-BALANCE ; prospective ; BMI ; CANCERS ; CANCER-RISK ; ACTIVITY QUESTIONNAIRE ; ANATOMIC SUBSITE ; intake ; LARGE-BOWEL-CANCER ; OCCUPATIONAL RISK
    Abstract: We investigated several aspects of the role of physical activity in colon and rectal cancer etiology that remain unclear in the European Prospective Investigation into Nutrition and Cancer. This cohort of 413,044 men and women had 1,094 cases of colon and 599 cases of rectal cancer diagnosed during an average of 6.4 years of follow-up. We analyzed baseline data on occupational, household, and recreational activity to examine associations by type of activity, tumor subsite, body mass index (BMI), and energy intake. The multivariate hazard ratio for colon cancer was 0.78 [95% confidence interval (95% CI), 0.59-1.03] among the most active participants when compared with the inactive, with evidence of a dose-response effect (P-trend = 0.04). For right-sided colon tumors, the risk was 0.65 (95% CI, 0.43-1.00) in the highest quartile of activity with evidence of a linear trend (P-trend=0.004). Active participants with a BMI under 25 had a risk of 0.63 (95% CI, 0.39-1.01) for colon cancer compared with the inactive. Finally, an interaction between BMI and activity (P-interaction=0.03) was observed for right-sided colon cancers; among moderately active and active participants with a BMI under 25, a risk of 0.38 (95% CI, 0.21-0.68) was found as compared with inactive participants with BMI 〉 30. No comparable decreased risks were observed for rectal cancer for any type of physical activity for any subgroup analyses or interactions considered. We found that physical activity reduced colon cancer risk, specifically for right-sided tumors and for lean participants, but not rectal cancer
    Type of Publication: Journal article published
    PubMed ID: 17164362
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  • 2
    Keywords: CANCER ; Germany ; LUNG ; FOLLOW-UP ; INFORMATION ; lung cancer ; LUNG-CANCER ; COHORT ; cohort study ; EPIDEMIOLOGY ; EXPOSURE ; MORTALITY ; occupation ; POPULATION ; RISK ; RISKS ; REDUCTION ; RISK-FACTORS ; ASSOCIATION ; HUMANS ; WOMEN ; MEN ; risk factors ; smoking ; COUNTRIES ; cancer risk ; POPULATIONS ; DIET ; VALIDITY ; EPIC ; nutrition ; SMOKERS ; RELATIVE RISK ; exercise ; physical activity ; REGRESSION ; ASSOCIATIONS ; PHYSICAL-ACTIVITY ; INTERVAL ; SUBTYPES ; prospective ; UNIT ; RISK-FACTOR ; CANCER-RISK ; sports ; occupations ; ACTIVITY QUESTIONNAIRE
    Abstract: Research conducted predominantly in male populations on physical activity and lung cancer has yielded inconsistent results. We examined this relationship among 416,277 men and women from the European Prospective Investigation into Cancer and Nutrition (EPIC). Detailed information on recent recreational, household and occupational physical activity, smoking habits and diet was assessed at baseline between 1992 and 2000. Relative risks (RR) were estimated using Cox regression. During 6.3 years of follow-up we identified 607 men and 476 women with incident lung cancer. We did not observe an inverse association between recent occupational, recreational or household physical activity and lung cancer risk in either males or females. However, we found some reduction in lung cancer risk associated with sports in males (adjusted RR = 0.71; 95% confidence interval 0.50-0.98; highest tertile vs. inactive group), cycling (RR = 0.73; 0.54-0.99) in females and non-occupational vigorous physical activity. For occupational physical activity, lung cancer risk was increased for unemployed men (adjusted RR = 1.57; 1.20-2.05) and men with standing occupations (RR = 1.35; 1.02-1.79) compared with sitting professions. There was no evidence of heterogeneity of physical activity associations across countries, or across any of the considered cofactors. For some histologic subtypes suggestive sex-specific reductions, limited by subgroup sizes, were observed, especially with vigorous physical activity. In total, our study shows no consistent protective associations of physical activity with lung cancer risk. It can be assumed that the elevated risks found for occupational physical activity are not produced mechanistically by physical activity itself but rather reflect exposure to occupation-related lung cancer risk factors. (c) 2006 Wiley-Liss, Inc
    Type of Publication: Journal article published
    PubMed ID: 16894558
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  • 3
    Keywords: CANCER ; MODEL ; MODELS ; FOLLOW-UP ; RISK ; METABOLISM ; INDEX ; CARCINOGENESIS ; ASSOCIATION ; BREAST-CANCER ; NO ; hormone ; PLASMA ; NUMBER ; WOMEN ; OBESITY ; cancer risk ; ORAL-CONTRACEPTIVES ; cholesterol ; LIPOPROTEIN ; LOW-DENSITY-LIPOPROTEIN ; case-control studies ; ABNORMALITIES ; BODY ; DIABETES-MELLITUS ; EPIC ; European Prospective Investigation into Cancer and Nutrition ; nutrition ; ENDOMETRIAL CANCER ; RELATIVE RISK ; REGRESSION-MODELS ; CLUSTER ; POSTMENOPAUSAL WOMEN ; MASS INDEX ; MASSES ; BODIES ; ONCOLOGY ; case control study ; case-control study ; REGRESSION ; ASSOCIATIONS ; ENDOMETRIAL ; RE ; INCREASE ; BODY-SIZE ; PHYSICAL-ACTIVITY ; LEVEL ; case control studies ; INTERVAL ; metabolic syndrome ; HORMONES ; prospective ; UNIT ; CANCER-RISK ; C-PEPTIDE ; SET ; case control ; LOGISTIC-REGRESSION ; BODY-MASS ; BODY-MASS-INDEX ; lipid ; HDL-CHOLESTEROL ; LOW-DENSITY ; SERUM-CHOLESTEROL
    Abstract: To clarify the role of metabolic factors in endometrial carcinogenesis, we conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC), and examined the relation between prediagnostic plasma lipids, lipoproteins, and glucose, the metabolic syndrome (MetS; a cluster of metabolic factors) and endometrial cancer risk. Among pre- and postmenopausal women, 284 women developed endometrial cancer during follow-up. Using risk set sampling, 546 matched control subjects were selected. From conditional logistic regression models, high-density lipoprotein cholesterol (HDL-C) levels were inversely associated with risk body mass index (BMI)-adjusted relative risk (FR) for top versus bottom quartile 0.61 (95% confidence intervals (CI) 0.38-0.97), P-trend= 0.02). Glucose levels were positively associated with risk (BMI-adjusted RR top versus bottom quartile 1.69 (95% Cl 0.99-2.90), P-trend, = 0.03), which appeared stronger among postmenopausal women (BMI-adjusted RR top versus bottom tertile 2.61 (95% Cl 1.46-4.66), P-trend=0.0006, P-heterogeneity=0.13) and never-users of exogenous hormones (P-heterogeneity=0-005 for oral contraceptive (OC) use and 0.05 for hormone replacement therapy-use). The associations of HDL-C and glucose with risk were no longer statistically significant after further adjustment for obesity-related hormones. Plasma total cholesterol, Low-density lipoprotein cholesterol (LDL-C), and triglycerides were not significantly related to overall risk. The presence of MetS was associated with risk (RR 2.12 (95% CI 1.51-2.97)), which increased with the number of MetS factors (P-trend=0.02). An increasing number of MetS factors other than waist circumference, however, was marginally significantly associated with risk only in women with waist circumference above the median (P-interaction=0-01). None of the associations differed significantly by fasting status. These findings suggest that metabolic abnormalities and obesity may act synergistically to increase endometrial cancer risk
    Type of Publication: Journal article published
    PubMed ID: 17914105
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  • 4
    Keywords: CANCER ; PROSTATE ; COHORT ; RISK ; prostate cancer ; PROSTATE-CANCER ; EPIC ; nutrition ; physical activity ; PHYSICAL-ACTIVITY ; prospective ; European Prospective Investigation into Cancer
    Abstract: The evidence concerning the possible association between physical activity and the risk of prostate cancer is inconsistent and additional data are needed. We examined the association between risk of prostate cancer and physical activity at work and in leisure time in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. In our study, including 127,923 men aged 20-97 years from 8 European countries, 2,458 cases of prostate cancer were identified during 8.5 years of followup. Using the Cox proportional hazards model, we investigated the associations between prostate cancer incidence rate and occupational activity and leisure time activity in terms of participation in sports, cycling, walking and gardening; a metabolic equivalent (MET) score based on weekly time spent on the 4 activities; and a physical activity index. MET hours per week of leisure time activity, higher score in the physical activity index, participation in any of the 4 leisure time activities, and the number of leisure time activities in which the participants were active were not associated with prostate cancer incidence. However, higher level of occupational physical activity was associated with lower risk of advanced stage prostate cancer (p(trend) = 0.024). In conclusion, our data support the hypothesis of an inverse association between advanced prostate cancer risk and occupational physical activity, but we found no support for an association between prostate cancer risk and leisure time physical activity.
    Type of Publication: Journal article published
    PubMed ID: 19415749
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  • 5
    Keywords: CANCER ; MODEL ; MODELS ; THERAPY ; FOLLOW-UP ; COHORT ; RISK ; REDUCTION ; ASSOCIATION ; BREAST ; breast cancer ; BREAST-CANCER ; hormone ; HEALTH ; AGE ; WOMEN ; cancer risk ; VALIDITY ; nutrition ; POSTMENOPAUSAL WOMEN ; REGRESSION ; ASSOCIATIONS ; RE ; BODY-SIZE ; INTERVAL ; PREMENOPAUSAL WOMEN ; PREMENOPAUSAL ; prospective ; CANCER-RISK ; ACTIVITY QUESTIONNAIRE ; ENERGY-EXPENDITURE ; BODY-MASS-INDEX
    Abstract: There is convincing evidence for a decreased risk of breast cancer with increased physical activity. Uncertainties remain, however, about the role of different types of physical activity on breast cancer risk and the potential effect modification for these associations. We used data from 218,169 premenopausal and postmenopausal women from nine European countries, ages 20 to 80 years at study entry into the European Prospective Investigation into Cancer and Nutrition. Hazard ratios (HR) from multivariate Cox regression models were calculated using metabolic equivalent value-based physical activity variables categorized in quartiles, adjusted for age, study center, education, body mass index, smoking, alcohol use, age at menarche, age at first pregnancy, parity, current oral contraceptive use, and hormone replacement therapy use. The physical activity assessment included recreational, household, and occupational activities. A total physical activity index was estimated based on cross-tabulation of these separate types of activity. During 6.4 years of follow-up, 3,423 incident invasive breast cancers were identified. Overall, increasing total physical activity was associated with a reduction in breast cancer risk among postmenopausal women (P-trend = 0.06). Specifically, household activity was associated with a significantly reduced risk in postmenopausal (HR, 0.81; 95% confidence interval, 0.70-0.93, highest versus the lowest quartile; P-trend = 0.001) and premenopausal (HR, 0.71; 95% confidence interval, 0.55-0.90, highest versus lowest quartile; P-trend = 0.003) women. Occupational activity and recreational activity were not significantly related to breast cancer risk in both premenopausal and postmenopausal women. This study provides additional evidence for a protective effect of physical activity on breast cancer risk
    Type of Publication: Journal article published
    PubMed ID: 17179488
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  • 6
    Keywords: CANCER ; COHORT ; RISK ; BREAST ; OVARIAN-CANCER ; WOMEN ; VALIDITY ; nutrition ; LIFE ; prospective ; ACTIVITY QUESTIONNAIRE
    Type of Publication: Journal article published
    PubMed ID: 19124520
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  • 7
    Keywords: CANCER ; Germany ; human ; MODEL ; MODELS ; THERAPY ; FOLLOW-UP ; POPULATION ; RISK ; RISKS ; PATIENT ; colon ; CONTRAST ; ASSOCIATION ; WOMEN ; MEN ; OBESITY ; COLORECTAL-CANCER ; COUNTRIES ; cancer risk ; COLON-CANCER ; BODY ; EPIC ; nutrition ; RELATIVE RISK ; POSTMENOPAUSAL WOMEN ; RECTAL-CANCER ; MASS INDEX ; ASSOCIATIONS ; colon cancer ; WEIGHT ; PHYSICAL-ACTIVITY ; HEIGHT ; GROWTH-FACTOR-I ; WAIST ; INTERVAL ; SIZE ; RANDOMIZED CONTROLLED-TRIAL ; ESTROGEN PLUS PROGESTIN ; DIETARY ASSESSMENT METHODS ; BMI ; CANCER-RISK ; REPLACEMENT ; WAIST CIRCUMFERENCE ; WOMEN UNITED-STATES
    Abstract: Background: Body weight and body mass index (BMI) are positively related to risk of colon cancer in men, whereas weak or no associations exist in women. This discrepancy may be related to differences in fat distribution between sexes or to the use of hormone replacement therapy (HRT) in women. Methods: We used multivariable adjusted Cox proportional hazards models to examine the association between anthropometric measures and risks of colon and rectal cancer among 368 277 men and women who were free of cancer at baseline from nine countries of the European Prospective Investigation Into Cancer and Nutrition. All statistical tests were two-sided. Results: During 6.1 years of follow-up, we identified 984 and 586 patients with colon and rectal cancer, respectively. Body weight and BMI were statistically significantly associated with colon cancer risk in men (highest versus lowest quintile of BMI, relative risk [RR] = 1.55, 95% confidence interval [CI] = 1.12 to 2.15; P-trend =.006) but not in women. In contrast, comparisons of the highest to the lowest quintile showed that several anthropometric measures, including waist circumference (men, RR = 1.39,95% CI = 1.01 to 1.93; P-trend = .001; women, RR = 1.48, 95% CI = 1.08 to 2.03; P-trend =.008), waist-to-hip ratio (WHR; men, RR = 1.51, 95% CI = 1.06 to 2.15; P-trend =.006; women, RR = 1.52, 95% CI = 1.12 to 2.05; P-trend =.002), and height (men, RR = 1.40, 95% CI = 0.99 to 1.98; P-trend =.04; women, RR = 1.79, 95% CI = 1.30 to 2.46; P-trend 〈.001) were related to colon cancer risk in both sexes. The estimated absolute risk of developing colon cancer within 5 years was 203 and 131 cases per 100 000 men and 129 and 86 cases per 100000 women in the highest and lowest quintiles of WHR, respectively. Upon further stratification, no association of waist circumference and WHR with risk of colon cancer was observed among postmenopausal women who used HRT. None of the anthropometric measures was statistically significantly related to rectal cancer. Conclusions: Waist circumference and WHR, indicators of abdominal obesity, were strongly associated with colon cancer risk in men and women in this population. The association of abdominal obesity with colon cancer risk may vary depending on HRT use in postmenopausal women; however, these findings require confirmation in future studies
    Type of Publication: Journal article published
    PubMed ID: 16818856
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  • 8
    Keywords: CANCER ; BLOOD ; Germany ; MODEL ; MODELS ; FOLLOW-UP ; RISK ; RISKS ; METABOLISM ; TISSUE ; TIME ; RISK-FACTORS ; BINDING ; CYCLE ; ASSOCIATION ; BREAST-CANCER ; hormone ; resistance ; PLASMA ; AGE ; WOMEN ; OBESITY ; risk factors ; NECROSIS-FACTOR-ALPHA ; cancer risk ; case-control studies ; nutrition ; TYPE-2 ; ENDOMETRIAL CANCER ; RELATIVE RISK ; ADIPOSE-TISSUE ; POSTMENOPAUSAL WOMEN ; insulin ; case-control study ; REGRESSION ; ENDOMETRIAL ; MENSTRUAL-CYCLE ; fat distribution ; LEVEL ; case control studies ; INTERVAL ; methods ; PHASE ; INSULIN-RESISTANCE ; metabolic syndrome ; HORMONES ; PREMENOPAUSAL ; prospective ; RISK-FACTOR ; CANCER-RISK ; type 2 diabetes ; C-PEPTIDE ; SET ; SERUM ADIPONECTIN ; BINDING PROTEIN-1 ; CIRCULATING ADIPONECTIN
    Abstract: Background: Adiponectin, an adipocytokine secreted by adipose tissue, is decreased in obesity, insulin resistance, type 2 diabetes, and polycystic ovary syndrome, all of which are well-established risk factors for endometrial cancer. Methods: We conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition to examine the relation between prediagnostic plasma adiponectin levels and endometrial cancer risk. Among pre- and postmenopausal women who were not currently using exogenous hormones, 284 women developed incident endometrial cancer during an average of 5.1 yr of follow-up. Using risk set sampling, 548 control subjects were selected, matched on center, age, menopausal status, phase of menstrual cycle, time of blood draw, and fasting status. Conditional logistic regression models were used to estimate relative risks and 95% confidence intervals. Results: Adiponectin levels were inversely associated with endometrial cancer risk [body mass index-adjusted relative risk for the top vs. bottom quartile = 0.56 (95% confidence interval 0.36-0.86), P-trend = 0.006]. There was evidence of a stronger inverse association among obese women than among nonobese women (P-heterogeneity = 0.03). The inverse association also appeared stronger for women who were postmenopausal or perimenopausal than premenopausal at baseline, but this was not statistically significantly heterogeneous (P-heterogeneity = 0.51). The association remained statistically significant after separate adjustment for other obesity-related physiological risk factors such as C-peptide, IGF binding protein-1, IGF binding protein-2, SHBG, estrone, or free testosterone but only marginally statistically significant after simultaneous adjustment for these factors. Conclusions: High circulating adiponectin levels are associated with reduced endometrial cancer risk, largely independent of other obesity-related risk factors
    Type of Publication: Journal article published
    PubMed ID: 17062769
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  • 9
    Keywords: CANCER ; GROWTH ; GROWTH-FACTOR ; MODEL ; MODELS ; FOLLOW-UP ; RISK ; RISKS ; PROTEIN ; SERA ; BINDING ; ASSOCIATION ; hormone ; WOMEN ; cancer risk ; case-control studies ; European Prospective Investigation into Cancer and Nutrition ; nutrition ; ENDOMETRIAL CANCER ; RELATIVE RISK ; POSTMENOPAUSAL WOMEN ; SERUM ; case-control study ; REGRESSION ; ENDOMETRIAL ; LEVEL ; case control studies ; INTERVAL ; SERUM-LEVELS ; HORMONES ; prospective ; RISK-FACTOR ; CANCER-RISK ; C-PEPTIDE ; IGFBP-1 ; SET ; IGFBP-2
    Abstract: We conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition, to examine the associations between prediagnostic serum concentrations of C-peptide, insulin-like growth factor binding protein (IGFBP)-1 and IGFBP-2, and endometrial cancer risk. Among pre- and post-menopausal women, who were not currently using exogenous hormones, 286 women developed incident endometrial cancer during an average 5.1 years follow-up. Using risk set sampling, 555 matched control subjects were selected. In conditional logistic regression models adjusted for matching factors only, endometrial cancer risk increased with increasing serum levels of C-peptide (relative risks (RR) for the top vs. bottom quartile = 2.13 [95% confidence interval (CI) 1.33-3.41], p(trend) = 0.001, and decreasing serum levels of IGFBP-2 (RR for the top vs. bottom quartile = 0.56 [95% CI 0.35-0.90], p(trend) = 0.03, but was not significantly associated with IGFBP-1 levels (RR for the top vs. bottom quartile = 0.76 [95% CI 0.47-1.21], p(trend) = 0.25). In BMI-adjusted models, only the C-peptide association remained marginally statistically significant (RR for the top vs. bottom quartile = 1.56 [95% CI 0.94-2.57], p(trend) = 0.05 for C-peptide; 0.84 [95% CI 0.50-1.40], p(trend) = 0.74 for IGFBP-2; and 1.08 [95% CI 0.65-1.78], p(trend) = 0.86 for IGFBP-1 levels). These associations were stronger among nonfasting women (〈/=〈/=6 hr since last meal; 63% of subjects) but were not evident among fasting women, although the interactions were not statistically significant. The C-peptide-risk association was substantially attenuated after adjustment for free estradiol in postmenopausal women (RR for the top vs. bottom quartile = 1.28 [95% CI 0.67-2.45], p(trend) = 0.42. Our results provide modest support to the hypothesis that hyperinsulinaemia is a risk factor for endometrial cancer. (c) 2007 Wiley-Liss, Inc
    Type of Publication: Journal article published
    PubMed ID: 17285578
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  • 10
    Keywords: CANCER ; THERAPY ; FOLLOW-UP ; RISK ; mechanisms ; ASSOCIATION ; hormone ; HEALTH ; AGE ; WOMEN ; etiology ; HORMONE REPLACEMENT THERAPY ; OBESITY ; risk factors ; cancer risk ; BODY ; nutrition ; ENDOMETRIAL CANCER ; LIFE-STYLE ; RELATIVE RISK ; OLDER WOMEN ; MASS INDEX ; ONCOLOGY ; ASSOCIATIONS ; ENDOMETRIAL ; WEIGHT ; PHYSICAL-ACTIVITY ; ADIPOSITY ; analysis ; methods ; anthropometry ; PREMENOPAUSAL WOMEN ; PREMENOPAUSAL ; prospective ; DIETARY ASSESSMENT METHODS ; INCREASED RISK ; CANCER-RISK ; BODY-FAT DISTRIBUTION ; ENDOGENOUS HORMONES ; BODY-MASS-INDEX ; IOWA WOMENS HEALTH ; SWEDISH TWIN REGISTRY ; WEIGHT CHANGE
    Abstract: Objective To examine the association between anthropometry and endometrial cancer, particularly by menopausal status and exogenous hormone use subgroups. Methods Among 223,008 women in the European Prospective Investigation into Cancer and Nutrition (EPIC) study, there were 567 incident endometrial cancer cases during 6.4 years of follow-up. The analysis was performed with Cox proportional hazards modeling. Results Weight, body mass index (BMI), waist and hip circumferences and waist-hip ratio (WHR) were strongly associated with increased risk of endometrial cancer. The relative risk (RR) for obese (BMI 30- 〈 40 kg/m(2)) compared to normal weight (BMI 〈 25) women was 1.78, 95% CI = 1.41-2.26, and for morbidly obese women (BMI 〉= 40) was 3.02, 95% CI = 1.66-5.52. The RR for women with a waist circumference of 〉= 88 cm vs. 〈 80 cm was 1.76, 95% CI = 1.42-2.19. Adult weight gain of 〉= 20 kg compared with stable weight (+/- 3 kg) increased risk independent of body weight at age 20 (RR = 1.75, 95% CI = 1.11-2.77). These associations were generally stronger for postmenopausal than premenopausal women, and oral contraceptives never-users than ever-users, and much stronger among never-users of hormone replacement therapy compared to ever-users. Conclusion Obesity, abdominal adiposity, and adult weight gain were strongly associated with endometrial cancer risk. These associations were particularly evident among never-users of hormone replacement therapy
    Type of Publication: Journal article published
    PubMed ID: 17297555
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