Impact of Chemotherapy Regimens on Body Composition of Breast Cancer Women: A Multicenter Study across Four Brazilian Regions.

This study aimed to investigate the effect of chemotherapy (CT) and its different types of regimens on the anthropometry and body composition of women with breast cancer. Three-hundred-and-four women with breast cancer were enrolled in this multicenter study. The participants were evaluated before the infusion of the first cycle of CT (pre-CT), and until two weeks after CT completion (post-CT), regarding body weight, body mass index (BMI); waist circumference (WC); waist-to-height ratio (WHtR); conicity index (C-index); fat mass index (FMI); and fat-free mass index (FFMI). CT regimens were classified as anthracycline-based (AC-doxorubicin or epirubicin); anthracyclines and taxane (ACT); cyclophosphamide, methotrexate, and 5-fluorouracil (CMF); or isolated taxanes (paclitaxel or docetaxel). Women significantly increased BMI and FMI post-CT (p < 0.001 and p = 0.007, respectively). The ACT regimen increased FMI (p < 0.001), while FFMI increased after AC (p = 0.007). It is concluded that the CT negatively impacted body composition and the type of regime had a strong influence. The ACT regimen promoted an increase in FMI compared to other regimens, and the AC increased FFMI. These findings reinforce the importance of nutritional monitoring of breast cancer patients throughout the entire CT treatment.

Diet quality index and its components have not associated with the development of breast cancer risk assessed by the diet quality index: a case-control study.

OBJECTIVE: To investigate if the diet quality and its components are associated with breast cancer risk. METHODS: A case-control study was conducted with 332 women, 114 who were diagnosed with breast cancer, and 218 control individuals. Groups were matched for age, body mass index, and menopausal status. The quality of diet was assessed using Brazilian Healthy Eating Index Revised (BHEI-R) and its components. Food consumption was measured through three 24-h dietary recalls and assessed using the NDS-R software. For statistical analyses, it was performed an adjusted logistic regression, estimation of the Odds Ratio (OR), and 95% confidence interval (95%CI), with a p-value <0.05. RESULTS: The BHEI-R score, classified into quartiles, did not differ between groups in the lowest quartile of diet quality (p=0.853). The components total cereals (p=0.038), saturated fat (p=0.039) and Gord_AA (fat, alcohol, and added sugar) (p=0.023) had higher scores among the case group. The scores for total fruits (p=0.010) and milk and dairy products (p=0.039) were higher among the control group. The BHEI-R components and the quality of diet were not associated with the outcome. CONCLUSION: Diet quality, assessed by the BHEI-R and its components, was not associated with breast cancer.

Diet quality index and its components have not associated with the development of breast cancer risk assessed by the diet quality index: a case-control study / Índice de qualidade da dieta e seus componentes não se associaram ao desenvolvimento de câncer de mama: um estudo caso-controle

ABSTRACT Objective: To investigate if the diet quality and its components are associated with breast cancer risk. Methods: A case-control study was conducted with 332 women, 114 who were diagnosed with breast cancer, and 218 control individuals. Groups were matched for age, body mass index, and menopausal status. The quality of diet was assessed using Brazilian Healthy Eating Index Revised (BHEI-R) and its components. Food consumption was measured through three 24-h dietary recalls and assessed using the NDS-R software. For statistical analyses, it was performed an adjusted logistic regression, estimation of the Odds Ratio (OR), and 95% confidence interval (95%CI), with a p-value <0.05. Results: The BHEI-R score, classified into quartiles, did not differ between groups in the lowest quartile of diet quality (p=0.853). The components total cereals (p=0.038), saturated fat (p=0.039) and Gord_AA (fat, alcohol, and added sugar) (p=0.023) had higher scores among the case group. The scores for total fruits (p=0.010) and milk and dairy products (p=0.039) were higher among the control group. The BHEI-R components and the quality of diet were not associated with the outcome. Conclusion: Diet quality, assessed by the BHEI-R and its components, was not associated with breast cancer.

RESUMO Objetivo: Avaliar se a qualidade da dieta e seus componentes estão associados ao desenvolvimento de câncer de mama. Métodos: Trata-se de estudo caso-controle com a participação de 332 mulheres, sendo 114 casos e 218 controles. Os grupos foram pareados por idade, índice de massa corporal e estado menopausal. A qualidade da dieta foi avaliada pelo Índice de Qualidade da Dieta Revisado (IQD-R) e seus componentes. O consumo alimentar foi mensurado por meio da aplicação de três recordatórios alimentares de 24 horas e analisados no software NDS-R. Foi realizada regressão logística ajustada, estimativa de odds ratio (OR) e intervalo de confiança de 95% (IC95%), com valor de p<0,05. Resultados: A pontuação do IQD-R, classificada em quartis, não diferiu entre os grupos no quartil inferior de qualidade da dieta (p=0,853). Os componentes cereais totais (p=0,038), gordura saturada (p=0,039) e Gord_AA (gordura, álcool e açúcar de adição) (p=0,023) tiveram maior pontuação no grupo caso. Já a pontuação de frutas totais (p=0,010) e leites e derivados (p=0,039) foi maior no grupo controle. Os componentes do IQD-R, assim como a qualidade da dieta, não se associaram ao desfecho investigado. Conclusão: A qualidade da dieta, avaliada pelo IQD-R e os seus componentes, não se associou ao câncer de mama.

Chemotherapy negatively impacts body composition, physical function and metabolic profile in patients with breast cancer.

BACKGROUND: Evidence suggests that chemotherapy (CT) leads to unfavorable outcomes on nutritional and metabolic profile; however, this is poorly understood. OBJECTIVE: To evaluate the impact of CT on body composition, bone mineral density (BMD), insulin resistance, lipid markers related to atherosclerotic cardiovascular diseases in women recently diagnosed with breast cancer according to menopausal status. METHODS: This is a prospective study that enrolled women newly diagnosed with stage II-III breast cancer (2014-18). Body composition were measured by dual-energy x-ray absorptiometry. Blood samples were collected to assess lipid profile, insulin resistance and sensitivity, visceral adiposity index and lipid accumulation product were calculated. Dietary intake, physical activity and function were also evaluated at the time of breast cancer diagnosis and after CT completion. RESULTS: Ninety-nine women (40.4% in the premenopausal stage) aged 51 ± 1 years took part in this study. CT duration was 197 ± 27 days and main regimen was anthracyclines with taxanes (88.9%). CT was associated with an increase in total and central adiposity, insulin resistance, and all lipid-related markers, and a decrease in appendicular lean mass index, BMD and HDL-c concentration. Premenopausal women experienced greater unfavorable outcomes on adiposity markers and BMD compared to postmenopausal women (p < 0.01). No changes were observed in dietary intake and physical activity after CT. CONCLUSIONS: Breast cancer CT negatively impacted body composition and metabolic profile. Premenopausal women experienced greater unfavorable impact on adiposity markers and BMD.

Sedentary Behavior and Alcohol Consumption Increase Breast Cancer Risk Regardless of Menopausal Status: A Case-Control Study.

Identification of modifiable risk factors for breast cancer is critical for primary prevention of the disease. The aim of this study was to evaluate how certain lifestyle variables modify the chances of developing breast cancer based on menopausal status. A case-control study was performed in a group of 542 women, 197 who were diagnosed with breast cancer and 344 control individuals. The groups were matched by age, body mass index, and menopausal status. Participants were evaluated for level of physical activity, alcohol consumption, smoking habit, weight, height, and waist circumference (WC). A multivariate logistic regression model was used to estimate odds ratios and 95% confidence intervals (95% CI). Regular consumption of alcoholic beverages (2.91, 95% CI 1.58-5.38 and 1.86, 95% CI 1.15-3.03) and sedentary behavior (2.08; 95% CI 1.12-3.85 and 1.81; 95% CI 1.12-2.94) were associated with breast cancer risk in pre- and postmenopausal women, respectively. High WC (3.31, 95% CI 1.45-7.55) was associated with an increased risk of developing breast cancer in premenopausal women. While in postmenopausal women, current smoking (2.43, 95% CI 1.01-5.83) or previous history of smoking (1.90; 95% CI 1.14-3.14) increased the chances of developing breast cancer. Sedentary behavior and current consumption of alcoholic beverages were more likely to increase the risk of developing breast cancer regardless of menopausal status.

High Bone Mineral Density of the Lumbar Spine Is Positively Associated with Breast Cancer.

OBJECTIVE: The objective of this study was to verify possible associations between bone mineral density (BMD) and breast cancer in recently diagnosed women in the Brazilian Mid-west region, considering the menopausal status of patients. METHODS: A case-control study was conducted with 142 cases of breast cancer and 234 controls matched by for age, body mass index (BMI), and menopausal status (pre- and postmenopause), performed in a university hospital in the Brazilian Mid-west. Lumbar spine (L1-L4), femoral neck, and total femur BMD were measured by the dual-energy X-ray absorptiometry (DXA) method. For association, a logistic regression analysis was used. RESULTS: Women in the highest lumbar spine BMD quartile presented had a higher chance of developing breast cancer (OR = 2.31; 1.02-5.25; p = 0.045), after adjusting for the confounding variables. Nonetheless, there were no statistically significant differences in the association between pre- and postmenopause in that quartile and breast cancer. CONCLUSIONS: High lumbar spine BMD was positively associated with breast cancer in the total sample. In evaluating the BMD of the femoral neck and total femur, such an association was not observed.

Visceral adiposity increases the risk of breast cancer: a case-control study.

INTRODUCTION: in recent decades, lifestyle changes in women involving physical inactivity, insulin resistance and body fat distribution have been associated with an increase in breast cancer. OBJECTIVE: to assess whether insulin resistance, lipid profile, and visceral adiposity are associated with increased risk of breast cancer. METHODS: a hospital-based case control study was conducted with 116 women newly diagnosed with breast cancer and 226 controls. Body mass index, waist circumference, total cholesterol, high-density lipoproteins (HDL), low-density lipoproteins (LDL), very-low-density lipoproteins (VLDL), triglycerides, glycated hemoglobin, HOMA-IR, HOMA-ß, lipid accumulation product (LAP), and visceral adiposity index (VAI) were assessed. Logistic regression was adjusted for body mass index and age to quantify the association between breast cancer risk and insulinresistance, dyslipidemias, and visceral adiposity. RESULTS: the case group had higher insulin resistance (p < 0.001), LAP (p = 0.012), and VAI (p = 0.004), and lower concentrations of HDL (p = 0.024) and HOMA-ß(p = 0.010) compared to the control. Insulin resistance (OR = 3.00, 95% CI: 1.75-5.17, p < 0.001) and higher VAI (OR = 1.91, 95% CI: 1.17-3.13, p = 0.01) were associated with breast cancer, whereas the highest concentration of HDL reduces the chances of cancer by 53% (95% CI: 0.32-0.86, p = 0.026). In the multivariate analysis, only LAP and VAI were associated to breast cancer. CONCLUSIONS: visceral fat accumulation increases the risk of breast cancer.