Browsing by keyword "breastfeeding"
Now showing items 1-3 of 3
-
Breastfeeding History and Risk of Stroke Among Parous Postmenopausal Women in the Women's Health InitiativeBackground: Stroke is the third leading cause of death among US Hispanic and non-Hispanic black women aged 65 and older. One factor that may protect against stroke is breastfeeding. Few studies have assessed the association between breastfeeding and stroke and whether this association differs by race and ethnicity. Methods and Results: Data were taken from the Women's Health Initiative Observational Study with follow-up through 2010; adjusted hazard ratios for stroke subsequent to childbirth were estimated with Cox regression models accounting for left and right censoring, overall and stratified by race/ethnicity. Of the 80 191 parous women in the Women's Health Initiative Observational Study, 2699 (3.4%) had experienced a stroke within a follow-up period of 12.6 years. The average age was 63.7 years at baseline. Fifty-eight percent (n=46 699) reported ever breastfeeding; 83% were non-Hispanic white, 8% were non-Hispanic black, 4% were Hispanic, and 5% were of other race/ethnicity. After adjustment for nonmodifiable potential confounders, compared with women who had never breastfed, women who reported ever breastfeeding had a 23% lower risk of stroke (adjusted hazard ratio=0.77; 95% confidence interval 0.70-0.83). This association was strongest for non-Hispanic black women (adjusted hazard ratio=0.52; 95% confidence interval 0.37-0.71). Further, breastfeeding for a relatively short duration (1-6 months) was associated with a 19% lower risk of stroke (adjusted hazard ratios=0.81; 95% confidence interval 0.74-0.89). This association appeared stronger with longer breastfeeding duration and among non-Hispanic white and non-Hispanic black women (test for trend P < 0.01). Conclusions: Study results show an association and dose-response relationship between breastfeeding and lower risk of stroke among postmenopausal women after adjustment for multiple stroke risk factors and lifestyle variables. Further investigation is warranted.
-
Disparities in Breastfeeding Among Military VeteransBACKGROUND: Although breastfeeding is a major public health priority and provides numerous benefits, women veterans encounter many barriers to initiating and sustaining breastfeeding. Women veterans are a growing population with unique health care needs related to exposures and injuries experienced during military service. These military experiences are linked to health diagnoses known to impact postpartum health behaviors, such as breastfeeding. RESEARCH AIM: The aim of this study was to identify factors associated with breastfeeding at 4 weeks postpartum among women veterans. METHODS: We used 2016-to-2018 survey data from women veterans (N = 420), interviewed before and after delivery, who were enrolled in maternity care coordination at a national sample of Veterans Health Administration facilities. Using the social ecological model, logistic regression was employed to explore the relationship between breastfeeding at least 4 weeks and postpartum and maternal/infant characteristics, interpersonal dynamics, community influences, and system factors. RESULTS: The rate of breastfeeding at 4 weeks postpartum was 78.6% among this sample of veterans. Self-employed participants were 2.8 times more likely to breastfeed than those who were employed outside the home. Participants who had been deployed at any point in their military career were twice as likely to breastfeed compared with those who never deployed. In this study sample, race independently predicted lower rates of breastfeeding, with African American participants being 48% less likely to breastfeed as compared with white participants. CONCLUSION: Our analysis suggests significant racial disparities in breastfeeding within veteran populations utilizing Veterans Health Administration, despite access to multiple sources of support from both the Veterans Health Administration and the community.
-
Humoral and Cell-Mediated Immune Response in Colostrum from Women Diagnosed Positive for SARS-CoV-2Objective: To evaluate the immune response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in colostrum from women who tested positive for the virus. Methods: Between March and September 2020 we obtained bilateral colostrum samples collected on spot cards within 48 hours of delivery from 15 new mothers who had previously tested positive for SARS-CoV-2. Four of 15 women provided liquid colostrum, which was used for validating results obtained from spot cards. Archived bilateral colostrum samples collected from 8 women during 2011-2013 were used as pre-coronavirus disease 2019 (COVID-19) controls. All samples were tested for reactivity to the receptor binding domain (RBD) of the SARS-CoV-2 spike protein using an enzyme-linked immunosorbent assay that measures SARS-CoV-2 RBD-specific IgA, IgG, and IgM and for levels of 10 inflammatory cytokines (interferon-gamma [IFN-gamma], tumor necrosis factor-alpha, interleukin [IL]-1beta, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12, IL-13) using a multiplex electrochemiluminescent sandwich assay. Results: Our validation studies indicate that the levels of SARS-CoV-2-specific antibodies and the associated cytokines measured in liquid colostrum are comparable to levels eluted from spot cards. Bilateral colostrum samples from 73%, 73%, and 33% of the 15 COVID-19 mothers exhibited IgA, IgG, and IgM reactivity to RBD, respectively. In addition, symptomatic COVID-19 mothers had statistically significant elevated levels of 4 of the 10 inflammatory markers (IFN-gamma, IL-4, IL-6, and IL-12) compared to asymptomatic COVID-19 mothers. Conclusions: A strong humoral immune response is present in the colostrum of women who were infected with SARS-CoV-2 before delivering. The evolution and duration of the antibody response, as well as dynamics of the cytokine response, remain to be determined. Our results also indicate that future large-scale studies can be conducted with milk easily collected on paper spot cards.
