Blood cadmium concentrations and environmental exposure sources in newcomer South and East Asian women in the Greater Toronto Area, Canada.

BACKGROUND: Immigrant women are often identified as being particularly vulnerable to environmental exposures and health effects. The availability of biomonitoring data on newcomers is limited, thus, presenting a challenge to public health practitioners in the identification of priorities for intervention. OBJECTIVES: In fulfillment of data needs, the purpose of this study was to characterize blood concentrations of cadmium (Cd) among newcomer women of reproductive age (19-45 years of age) living in the Greater Toronto Area (GTA), Canada and to assess potential sources of environmental exposures. METHODS: A community-based model, engaging peer researchers from the communities of interest, was used for recruitment and follow-up purposes. Blood samples were taken from a total of 211 newcomer women from South and East Asia, representing primary, regional origins of immigrants to the GTA, and environmental exposure sources were assessed via telephone survey. Metal concentrations were measured in blood samples (diluted with 0.5% (v/v) ammonium hydroxide and 0.1% (v/v) octylphenol ethoxylate) using a quadrupole ICP-MS. Survey questions addressed a wide range of environmental exposure sources, including dietary and smoking patterns and use of nutritional supplements, herbal products and cosmetics. RESULTS: A geometric mean (GM) blood Cd concentration of 0.39µg/L (SD:±2.07µg/L) was determined for study participants (min/max: <0.045µg/L (LOD)/2.36µg/L). Several variables including low educational attainment (Relative Ratio (RR) (adjusted)=1.50; 95% CI 1.17-1.91), milk consumption (RR (adjusted)=0.86; 95% CI 0.76-0.97), and use of zinc supplements (RR (adjusted)=0.76; 95% CI 0.64-0.95) were observed to be significantly associated with blood Cd concentrations in the adjusted regression model. The variable domains socioeconomic status (R2adj=0.11) and country of origin (R2adj=0.236) were the strongest predictors of blood Cd. CONCLUSION: Blood Cd concentrations fell below those generally considered to be of human health concern. However, negative health effects cannot be entirely excluded, especially for those that fall in the upper percentile range of the distribution, given the mounting evidence for negative health outcomes at low environmental exposure concentrations.

Effect of tai chi on musculoskeletal health-related fitness and self-reported physical health changes in low income, multiple ethnicity mid to older adults.

BACKGROUND: Tai Chi (TC) has proven to be effective at improving musculoskeletal fitness by increasing upper and lower body strength, low back flexibility and overall physical health. The objectives of this study were to examine changes in musculoskeletal health-related fitness and self-reported physical health after a 16 week TC program in a low income multiple ethnicity mid to older adult population. METHODS: Two hundred and nine ethnically diverse mid to older community dwelling Canadian adults residing in low income neighbourhoods were enrolled in a 16 week Yang style TC program. Body Mass Index and select musculoskeletal fitness measures including upper and lower body strength, low back flexibility and self-reported physical health measured by SF 36 were collected pre and post the TC program. Determinants of health such as age, sex, marital status, education, income, ethnicity of origin, multi-morbidity conditions, weekly physical activity, previous TC experience as well as program adherence were examined as possible musculoskeletal health-related fitness change predictors. RESULTS: Using paired sample t-tests significant improvements were found in both upper and lower body strength, low back flexibility, and the SF 36 physical health scores (p < 0.05). Based on multiple linear regression analyses, no common health determinants explained a significant portion of the variation in percent changes of the musculoskeletal fitness and SF 36 measures. CONCLUSIONS: These results reveal that TC has the potential of having a beneficial influence on musculoskeletal health-related fitness and self-reported physical health in a mid to older low socioeconomic, ethnically diverse sample.

Vitamin D status of older adults of diverse ancestry living in the Greater Toronto Area.

BACKGROUND: Physiological and lifestyle factors put older adults at an increased risk of vitamin D insufficiency and resulting negative health outcomes. Here we explore the vitamin D status in a sample of community dwelling older adults of diverse ancestry living in the Greater Toronto area (GTA). METHODS: Two hundred and twenty-four (224) adults over 60 years of age were recruited from the Square One Older Adult Centre, in Mississauga, Ontario. Circulating 25-hydroxyvitamin D (25(OH)D) concentrations were measured from dried blood spot cards. Dietary and supplemental intakes of vitamin D were assessed via questionnaires. Skin pigmentation was assessed quantitatively by measuring melanin levels using a reflectometer. RESULTS: The mean 25(OH)D concentration in the total sample was 82.4 nmol/L. There were no statistically significant differences in serum 25(OH)D concentrations, supplemental or dietary vitamin D intakes between the three major ancestral groups (East Asians, Europeans and South Asians). Females had significantly higher 25(OH)D concentrations than males (84.5 nmol/L vs. 72.2 nmol/L, p = 0.012). The proportion of participants with 25(OH)D concentrations below 50 nmol/L and 75 nmol/L were 12.1%, and 38.8%, respectively. The mean daily supplemental intake of vitamin D was 917 IU/day. Vitamin D intake from supplements was the major factor determining 25(OH)D concentrations (p < 0.001). CONCLUSIONS: Mean concentration of 25(OH)D in a sample of older adults of diverse ancestry living in the GTA exceeded 80 nmol/L, and there were no significant differences in 25(OH)D levels between ancestral groups. These results sharply contrast with our recent study focused on young adults of diverse ancestry living in the same geographic area, in which we found substantially lower 25(OH)D concentrations (mean 39.5 nmol/L), low supplemental vitamin D intake (114 IU/day), and significant differences in 25(OH)D levels between ancestral groups. High daily intake of supplemental vitamin D in this sample of older adults likely accounts for such disparate findings with respect to the young adult sample.

Framing the new midwifery: media narratives in Ontario and Quebec during the 1980s and 1990s.

After long periods of activism and policy debate, Ontario and Quebec were the first two provinces to integrate midwifery into their health-care services. Despite its success and growing popularity in the post-legislative era, midwifery was a highly contentious policy issue, with debates emerging at every level of policy development. In this essay, the authors explore how these debates played out in media. Specifically, the authors suggest that the frames produced by newspapers during this period served to align midwifery with broader provincial socio-political discourses, which in turn legitimized state intervention in the area of reproductive health. At the same time, however, the authors demonstrate that where Ontario media representations muted differences between midwives and physicians, representations in Quebec emphasized them. Thus, the authors show that in very different ways, media representations of midwifery in Ontario and Quebec both established a discursive context in which the state had to "act on" midwifery and midwives, and also challenged the potential of midwifery to transform women's birth experiences.

Contemporary treatments for psychological trauma from the perspective of peacekeepers.

The purpose of this hermeneutic phenomenological study was to examine contemporary treatment approaches for psychological trauma from the perspective ofpeacekeepers. Data were collected via audiotaped interviews with 10 contemporary peacekeepers who had been deployed to Somalia, Rwanda, or the formerYugoslavia. The participants were asked to describe their experience with various treatments for psychological trauma. Narratives from the transcribed interviews were reviewed with the participants and their comments solicited for rigour and verification of meaning. A thematic analysis of the text, conducted to examine the ways in which contemporary treatment approaches help peacekeepers to heal from trauma, revealed 3 themes: medications as helping the most, understanding what is going on, and self-healing as a journey of discovery. The embodied nature of healing from trauma among contemporary peacekeepers should not be overlooked. Studies on the efficacy of different treatment modalities for psychological trauma, including mind-body complementary therapies, are needed.

Linking traditional knowledge and environmental practice in Ontario.

Beginning in the late 1980s with the release of Our Common Future by the World Commission on Environment and Development, followed by the development of international accords such as the 1992 Convention on Biological Diversity, international pressure to resolve Indigenous rights issues has been steadily mounting. Successive Canadian governments have been striving increasingly to recognize and incorporate Aboriginal traditional knowledge into resource management planning. Following more than a decade of such efforts, the question of how to achieve such incorporation appropriately remains inadequately answered. This essay contributes to the resolution of this issue by first clarifying some key differences between Aboriginal and non-Aboriginal definitions of "traditional knowledge." Then, three Ontario case studies are briefly described that highlight the most and least successful aspects of previous undertakings. Among the lessons learned are the need to value traditional knowledge on a par with Western science while recognizing the particular capabilities of each system, and the requirement that Aboriginal peoples and their knowledge participate on a mutually respectful basis.

The use of traditional medicine by Ghanaians in Canada.

BACKGROUND: Research into health and health-care seeking behaviour amongst immigrant populations suggests that culturally-based behaviours change over time towards those prevalent in the host culture. Such acculturation of immigrant groups occurs as part of the interaction of immigrants with mainstream culture. This study examined the acculturation of Ghanaian immigrants in Greater Toronto Area (Canada) focusing particularly on attitudes towards and usage of Ghanaian traditional medicine (TRM). METHODS: The study used both quantitative and qualitative methods. Structured questionnaire interviews were conducted with a sample of Ghanaians in active collaboration with the Ghanaian-Canadian Association in the Greater Toronto Area (GTA). A total of 512 questionnaire interviews were conducted. In addition, three focus groups of nine participants each were conducted with a sub-sample of Ghanaians in Canada. RESULTS: Both the questionnaire and the focus groups indicated that nearly 73% of the Ghanaian immigrants in Canada have a positive attitude toward Ghanaian TRM. This is in comparison with less than 30% who have changed their attitude for various reasons. Some of the attraction of TRM lies in its holistic origin. Ghanaians in the GTA have been pursuing 'integration' and 'assimilation' in their acculturation in Canada. Some have given up or modified some of their attitudes and opinions toward TRM to embrace the 'modern' or 'civilized' way of living. CONCLUSION: There is the need for health care providers and other stakeholders to be aware of the influence of religion on African immigrants during their acculturation process. Although modernity is said to be founded on the 'ruthless undermining of tradition', there is no evidence to suggest that Ghanaian traditional religion has been undermined to such an extent that there is a major change in attitudes towards TRM.

An integrated multi-institutional diabetes prevention program improves knowledge and healthy food acquisition in northwestern Ontario First Nations.

This article presents the impact results of a feasibility study in Canada for prevention of risk factors for diabetes in seven northwestern Ontario First Nations. Baseline and follow-up data were collected before and after the 9-month intervention program in schools, stores, and communities that aimed to improve diet and increase physical activity among adults. Regression analyses indicate a significant change in knowledge among respondents in intervention communities (p < .019). There was also a significant increase in frequency of healthy food acquisition among respondents in the intervention communities (p < .003). There were no significant changes in physical activity or body mass index in either intervention or comparison groups. The multi-institutional approach demonstrated promising results in modifying selected risk factors for diabetes First Nations communities.

Canadians' use of U.S. medical services.

To explore the extent of cross-border care seeking among Canadians, we analyzed the growth and distribution of Ontario Health Insurance Plan expenditures for medical care services provided in the United States to Ontario residents from 1987 to 1995. Although total out-of-province spending is low relative to in-province spending, there is evidence of cross-border care seeking for cardiovascular and orthopedic procedures, mental health services, and cancer treatments. However, combined with a preliminary investigation of cross-border patient care seeking using nonpublic funding sources, these analyses do not support the perception of widespread cross-border medical care seeking by Ontario residents.