Understanding obesity in the context of an Indigenous population-A qualitative study

Interventions to prevent or treat obesity in adult Indigenous Australians: A systematic review

BACKGROUND

Aboriginal and Torres Strait Islander (Indigenous) Australians experience a disproportionately higher prevalence of obesity compared with non-Indigenous Australians. We aimed to describe existing research into lifestyle, pharmacological or surgical interventions for preventing or treating obesity in Indigenous Australians.

METHODS

A systematic review of published and grey literature was performed. Medline, Embase, Emcare (on the OVID platform), Web of Science and website searches were conducted to April 2024. Observational and randomised studies of adult Indigenous Australians were included if an intervention was implemented to prevent and/or treat obesity and post-intervention results were reported. The PRISMA systematic review reporting methods was used to collate data.

RESULTS

Of 1019 records screened, 17 were included; most described educational initiatives or lifestyle programs for improving diet and exercise. There were no reports of pharmacotherapies for weight management. The effect of lifestyle programs on weight reduction was modest (∼2-4 kg after 4-12 months). There were five reports on short-term (12 week) structured exercise programs. Two non-randomised studies of structured exercise showed reduction in weight in the highest weight groups whilst the two randomised trials showed ∼2 kg weight reduction compared with control. One observational study described mean ∼26 kg weight reduction at two years after laparoscopic adjustable gastric banding in 26 Indigenous Australians.

CONCLUSIONS

Community-based lifestyle interventions to manage excess weight can be successfully conducted in Indigenous Australians, but with generally limited efficacy. Providing background community-based lifestyle programs may facilitate the conduct of randomised trials of newer, effective anti-obesity pharmacotherapy in this high priority population.

'It's not a solution to keep telling me to lose weight!' Exploring endometrial cancer survivors' experiences of nutrition and well-being advice: A qualitative study

AIMS

The aim was to explore Endometrial cancer (EC) survivors' experiences of being offered nutrition and well-being advice.

METHODS

This qualitative study was conducted at two tertiary centres in Aotearoa New Zealand. Semi-structured conversations with people who had completed treatment for EC in the past 12 months were undertaken to explore how they were offered nutrition and well-being advice as part of standard follow-up care. Interviews were analysed using reflexive thematic analysis.

RESULTS

Fifteen people of Pacific, Māori and European ethnicity participated. Five themes were derived: (i) isolation and vulnerability, (ii) importance of language, (iii) inconsistent availability and relevance of nutrition and well-being information, (iv) competing priorities and influences and (v) holistic and culturally responsive support. People often experienced judgement associated with their weight as part of their care, with limited understanding of their lived realities. Nutrition and well-being advice was not widely available or accessible, and people had to explicitly ask for it. Social and environmental factors were barriers to making changes to health behaviours. A need for culturally safe holistic care was identified.

CONCLUSION

Enhancing survivorship after EC is ultimately premised on providing culturally safe and responsive care. Expanding workforce training in communication around high weight as well as education and self-assessment of cultural safety could enable aspects of this. A holistic care program could facilitate wider access to nutrition and well-being advice and better meet the needs of this population.

Social Determinants Influencing Nutrition Behaviors and Cardiometabolic Health in Indigenous Populations: A Scoping Review of the Literature

Nutrition behavior is influenced by a large number of factors, including social and cultural factors. This scoping review aims to summarize how social determinants of health (SDoH) influence nutrition behaviors in Indigenous populations affected by or at risk of cardiometabolic diseases. Following the PRISMA-ScR guidelines, we conducted a systematic search in six databases-PubMed, Web of Science, CINAHL, PsycINFO, Cochrane Library, and World Health Organization Global Index Medicus-limiting results to studies published in English up to 27 October 2023. A descriptive synthesis was conducted. We identified 1490 articles, and after screening, 31 of them met our inclusion criteria. We found that nutritional behavior is impacted by various SDoH domains, including economic stability, neighborhood and built environment, education, health and healthcare, and social and community context. The shift from traditional diets to Westernized diets and from subsistence-based food gathering to reliance on store-bought and processed foods reflects changes in SDoH, affecting both nutrition behaviors and health outcomes. Although not all included studies examined every SDoH domain in our review, future research should consider all domains to gain a comprehensive understanding of how they impact nutritional behavior. This approach will better inform interventions and policies, ultimately promoting health equity in Indigenous communities.

A multiple case study of pre-diabetes care undertaken by general practice in Aotearoa/New Zealand: de-incentivised and de-prioritised work

BACKGROUND

In Aotearoa/New Zealand (NZ) general practices diagnose and manage pre-diabetes. This work is important as it has the potential to delay or prevent the onset of Type 2 Diabetes (T2DM), reduce NZ's health inequities, and the burden that T2DM places on health care services. However, no study has previously examined how this work routinely occurs in NZ.

METHODS

Two case studies of practices serving ethnically and socio-economically diverse populations, followed by cross-case analysis.

RESULTS

The NZ health care context including funding mechanisms, reporting targets, and the disease centred focus of care, acted together to dis-incentivise and de-prioritise pre-diabetes care in general practices. The social determinants of health differentially influenced patients' ability to engage with and respond to pre-diabetes care, significantly impacting this work. Differing perspectives about the significance of pre-diabetes and gaps in systematic screening practices were identified. Interventions used were inconsistent and lacked comprehensive ongoing support.

CONCLUSIONS

Complex multi-layered factors impact on pre-diabetes care, and many of the barriers cannot be addressed at the general practice level. The practice serving the most disadvantaged population who concurrently have higher rates of pre-diabetes/T2DM were more adversely affected by the barriers identified.

Understanding weight management experiences from patient perspectives: qualitative exploration in general practice

BACKGROUND

Obesity is a complex health issue affecting the quality of life of individuals and contributing to an unsustainable strain on healthcare professionals and national health systems. National policy guidelines indicate that general practice is best suited to deliver obesity healthcare, however, obesity rates continue to rise worldwide indicating interventions are ineffective in this space. The aim of this study was to explore the weight management experiences from patient perspectives.

METHODS

This qualitative study used semi-structured interviews with 16 rural Waikato general practice patients. Interviews were analysed using reflexive thematic analysis.

RESULTS

Four themes were identified: Inconsistent Information, Significance of Holistic Factors, Obesity Centre Need, and Education. Participants expressed frustration at contradictory health messages, commercial company and 'expert' definition distrust, and that 'holistic' aspects to health significant to the weight management journey were unable to be addressed in general practice.

CONCLUSION

Whilst primary care is positioned as suitable for delivering obesity healthcare, this study found that participants do not perceive general practice to be equipped to deliver this care. Instead, participants argued for a specialist obesity centre capable of meeting all their obesity healthcare needs. Further, wider issues including on-line commodification of health and neo-liberal capitalism - factors that exploit people with a stigmatised health issue - can cause further harm to the participant. A radical modernisation of education, information, and resources from regulated, qualified and 'trusted' healthcare professionals who can provide safe, non-stigmatising supportive services is recommended to meet the unique and changing food climate, reduce obesity rates and improve health outcomes.

It is time for a more targeted approach to prediabetes in primary care in Aotearoa New Zealand

Type 2 diabetes (T2DM), its related morbidities and entrenched diabetes-related inequities pose significant challenges for health care delivery systems in Aotearoa New Zealand (NZ). Primary care services undertake the majority of diabetes prevention work by initially detecting and managing those with prediabetes. In this viewpoint, we present available NZ data to highlight NZ trends in prediabetes and consider the current NZ clinical guidelines and the prediabetes care pathway. Multiple areas for improvement are identified to optimise diabetes prevention, potentially reduce T2DM inequities, and sustain more effective prediabetes management in primary care in NZ.

Sociodemographic determinants of chronic kidney disease in Indigenous children

Rates of chronic kidney disease (CKD) are disproportionately increased in Indigenous peoples. The focus has traditionally been on adults, as they experience the highest rates of kidney failure requiring kidney replacement therapy. The impacts of colonization, systemic racism, and sociodemographic marginalization however impact the health of Indigenous peoples across the lifespan. This review presents the social context within which Indigenous children develop and the impact relevant to kidney health across the developmental stages. In utero exposures impact nephron endowment which can manifest in glomerular hyperfiltration and sclerosis as well as an increased risk of congenital anomalies of the kidney and urinary tract. Young children are at increased risk of autoimmune conditions, secondary to infectious and environmental exposures, and are also exposed to the impacts of a Western lifestyle manifesting early onset overweight/obesity. Adolescents begin to manifest more severe metabolic complications such as type 2 diabetes. The impacts of early onset diabetes are associated with aggressive kidney complications and high rates of kidney failure in young adulthood. Finally, the key elements of successful prevention and treatment strategies are discussed including the importance of screening for asymptomatic, modifiable early disease, linked with clinical primary and tertiary care follow-up, and culturally relevant and safe care.

The lived experience of patients with obesity: A systematic review and qualitative synthesis

Although the deleterious effects of obesity have been well documented in terms of morbidity and mortality, less is known about what it is like to live with this complex and chronic disease. This study systematically reviewed and synthesized peer-reviewed studies relating to the lived experience of patients with obesity. A total of 12,388 records were screened, resulting in the inclusion of 32 final studies. Meta-ethnographic synthesis of these 32 studies generated five "third-order constructs" or themes: the development of obesity; a life limited; stigma, judgment, shame, and blame; treatment and; experiences of specific or minority groups. These constructs describe, from the patient's perspective, the factors associated with the development and maintenance of obesity; the effects of the disease on their day-to-day lives; the impact of the stigma and judgment many patients are subjected to; and their experience of accessing, or trying to access, treatment for their healthcare needs. This synthesis reveals the dearth of studies that focus solely on the experience of the patient and highlights the tendency for participant-informed, rather than participatory, methods in obesity research. It concludes with a call for further participatory research into the experiences of people living with obesity.

'No sugar', 'no junk food', 'do more exercise' - moving beyond simple messages to improve the health of Aboriginal women with Hyperglycaemia in Pregnancy in the Northern Territory - A phenomenological study

BACKGROUND

Globally, rates of hyperglycaemia in pregnancy are highest among Indigenous women. The highest prevalence has been documented among Aboriginal women in the Northern Territory of Australia. Despite knowledge of this for over two decades, there has been very limited examination of the specific needs and experiences of Aboriginal women regarding this condition.

QUESTION

How do Aboriginal women with hyperglycaemia in pregnancy understand and experience this condition, and how can their care be improved?

METHODS

A phenomenological methodology underpinned semi-structured in-depth interviews with 35 Aboriginal women and seven health professionals across the Northern Territory. Data were inductively analysed.

FINDINGS

The findings revealed that in general, participants in this study could recite simple health messaging regarding diabetes (e.g. 'no sugar'), but many lacked in-depth knowledge and this affected the management of their condition. Nevertheless, many identified pregnancy as a powerful motivator for change, signalling scope to improve health messaging. Women consistently expressed the need for diabetes education that was culturally appropriate, a clear desire for maternity care that was family-centred, based on respectful relationships with the same care provider, and respected Aboriginal ways of knowing and being.

CONCLUSION

Existing health messaging around hyperglycaemia in pregnancy has limited reach with Aboriginal women in the Northern Territory. Reducing the burden of hyperglycaemia in pregnancy among these women requires a sustained commitment to redesign of maternity and diabetes care to incorporate the cultural and social context of women's lives.

The Adaptation of a Youth Diabetes Prevention Program for Aboriginal Children in Central Australia: Community Perspectives

This study reports on integrating community perspectives to adapt a family-focused, culturally appropriate behavioural intervention program to prevent diabetes among Aboriginal children (6-11 years) in Central Australia. A participatory action research approach was used to engage a range of service providers, cultural advisors, and family groups. Appropriateness, acceptability, content, and delivery of a prevention program within the Central Australian context were discussed through a series of workshops with twenty-five service providers and seven family groups separately. The data obtained were deductively coded for thematic analysis. Main findings included: (i) the strong need for a diabetes prevention program that is community owned, (ii) a flexible and culturally appropriate program delivered by upskilling community members as program facilitators, and (iii) consideration of social and environmental factors when implementing the program. It is recommended that a trial of the adapted prevention program for effectiveness and implementation is led by an Aboriginal community-controlled health service.

Wellbeing of Indigenous Peoples in Canada, Aotearoa (New Zealand) and the United States: A Systematic Review

Despite the health improvements afforded to non-Indigenous peoples in Canada, Aotearoa (New Zealand) and the United States, the Indigenous peoples in these countries continue to endure disproportionately high rates of mortality and morbidity. Indigenous peoples' concepts and understanding of health and wellbeing are holistic; however, due to their diverse social, political, cultural, environmental and economic contexts within and across countries, wellbeing is not experienced uniformly across all Indigenous populations. We aim to identify aspects of wellbeing important to the Indigenous people in Canada, Aotearoa and the United States. We searched CINAHL, Embase, PsycINFO and PubMed databases for papers that included key Indigenous and wellbeing search terms from database inception to April 2020. Papers that included a focus on Indigenous adults residing in Canada, Aotearoa and the United States, and that included empirical qualitative data that described at least one aspect of wellbeing were eligible. Data were analysed using the stages of thematic development recommended by Thomas and Harden for thematic synthesis of qualitative research. Our search resulted in 2669 papers being screened for eligibility. Following full-text screening, 100 papers were deemed eligible for inclusion (Aotearoa (New Zealand) n = 16, Canada n = 43, United States n = 41). Themes varied across countries; however, identity, connection, balance and self-determination were common aspects of wellbeing. Having this broader understanding of wellbeing across these cultures can inform decisions made about public health actions and resources.

Objectively Measured Physical Activity Is Associated With Body Composition and Metabolic Profiles of Pacific and New Zealand European Women With Different Metabolic Disease Risks

Objective: To assess associations between physical activity (PA), body composition, and biomarkers of metabolic health in Pacific and New Zealand European (NZE) women who are known to have different metabolic disease risks. Methods: Pacific (n = 142) or NZE (n = 162) women aged 18-45 years with a self-reported body mass index (BMI) of either 18.5-25.0 kg⋅m-2 or ≥30.0 kg⋅m-2 were recruited and subsequently stratified as either low (<35%) or high (≥35%) BF%, with approximately half of each group in either category. Seven-day accelerometery was used to assess PA levels. Fasting blood was analysed for biomarkers of metabolic health, and whole body dual-energy X-ray absorptiometry (DXA) was used to estimate body composition. Results: Mean moderate-to-vigorous physical activity (MVPA; min⋅day-1) levels differed between BF% (p < 0.05) and ethnic (p < 0.05) groups: Pacific high- 19.1 (SD 15.2) and low-BF% 26.3 (SD 15.6) and NZE high- 30.5 (SD 19.1) and low-BF% 39.1 (SD 18.4). On average Pacific women in the low-BF% group engaged in significantly less total PA when compared to NZE women in the low-BF% group (133 cpm); no ethnic difference in mean total PA (cpm) between high-BF% groups were observed: Pacific high- 607 (SD 185) and low-BF% 598 (SD 168) and NZE high- 674 (SD 210) and low-BF% 731 (SD 179). Multiple linear regression analysis controlling for age and deprivation showed a significant inverse association between increasing total PA and fasting plasma insulin among Pacific women; every 100 cpm increase in total PA was associated with a 6% lower fasting plasma insulin; no significant association was observed in NZE women. For both Pacific and NZE women, there was an 8% reduction in fasting plasma insulin for every 10-min increase in MVPA (p ≤ 0.05). Conclusion: Increases in total PA and MVPA are associated with lower fasting plasma insulin, thus indicating a reduction in metabolic disease risk. Importantly, compared to NZE, the impact of increased total PA on fasting insulin may be greater in Pacific women. Considering Pacific women are a high metabolic disease risk population, these pre-clinical responses to PA may be important in this population; indicating promotion of PA in Pacific women should remain a priority.

What affects programme engagement for Māori families? A qualitative study of a family-based, multidisciplinary healthy lifestyle programme for children and adolescents

AIM

It is important that intervention programmes are accessible and acceptable for groups most affected by excess weight. This study aimed to understand the barriers to and facilitators of engagement for Māori in a community-based, assessment-and-intervention healthy lifestyle programme (Whānau Pakari).

METHODS

Sixty-four in-depth, home-based interviews were conducted with past service users. Half of these were with families with Māori children and half with non-Māori families. The interviews were thematically analysed with peer debriefing for validity.

RESULTS

Māori families experienced barriers due to racism throughout the health system and society, which then affected their ability to engage with the programme. Key barriers included the institutionalised racism evident through substantial structural barriers and socio-economic challenges, the experience of interpersonal racism and its cumulative impact with weight stigma, and internalised racism and beliefs of biological determinism. Responses to these barriers were distrust of health services, followed by renewed engagement or complete disengagement. Participants identified culturally appropriate care as that which was compassionate, respectful, and focused on relationship building.

CONCLUSIONS

While Whānau Pakari is considered appropriate due to the approach of the delivery team, this is insufficient to retain some Māori families who face increased socio-economic and structural barriers. Past instances of weight stigma and racism have enduring effects when re-engaging with future health services, and inequities are likely to persist until these issues are addressed within the health system and wider society.

Adolescents' understanding of obesity: a qualitative study from rural South Africa

Background

Levels of obesity are rising in South Africa, notably among adolescent females. Excessive energy-dense diets and physical inactivity are among the factors contributing to this increase. Given that these factors are largely behavioural, understanding young people’s views of obesity can contribute to more targeted behavioural interventions. Yet little is known of how rural South African adolescents view obesity.

Objectives

The aim of this study was to explore rural South African adolescents’ views of obesity, including their understanding of its causes, consequences, and solutions.

Methods

This qualitative study took place within the MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt) study area, in rural northeast South Africa. Three focus group discussions were held with male (n = 16) and female adolescents (n = 15), aged 14–19 years in 2018. Data were analysed using thematic analysis and the Social Cognitive Theory used to frame the findings.

Results

Participants presented conflicting views of obesity, with both positive and negative opinions expressed. Causes of obesity were seen to be multifactorial, including genetics, diet, lack of physical activity, and HIV treatment. Adolescents proposed medication and hospitalisation as ways to address obesity. When discussing interventions to address obesity, adolescents expressed the need for more information, suggesting that providing information to both themselves and their family members as part of interventions would be important.

Conclusions

Rural South African adolescents have a complex perspective of obesity, likely driven in part by the current nutrition transition underway and do not inherently see individual behaviour as a driver or mitigator of obesity. Complex interventions including the involvement of other household members are needed to change adolescents’ views on the role of the individual, and ultimately, change both individual and household behaviour to prevent obesity.

Comparing enhanced versus standard Diabetes Prevention Program among indigenous adults in an urban setting: a randomized controlled trial

BACKGROUND

Indigenous people in the United States are at high risk for diabetes. Psychosocial stressors like historical trauma may impede success in diabetes prevention programs.

METHODS

A comparative effectiveness trial compared a culturally tailored diabetes prevention program (standard group) with an enhanced one that addressed psychosocial stressors (enhanced group) in 2015 to 2017. Participants were 207 Indigenous adults with a body mass index (BMI) of ≥30 and one additional criterion of metabolic syndrome, and were randomized to the standard or enhanced group. Both groups received a culturally tailored behavioral diabetes prevention program. Strategies to address psychosocial stressors were provided to the enhanced group only. Change in BMI over 12 months was the primary outcome. Secondary outcomes included change in quality of life, and clinical, behavioral, and psychosocial measures at 6 and 12 months.

RESULTS

The two groups did not significantly differ in BMI change at 12 months. The two groups also did not differ in any secondary outcomes at 6 or 12 months, with the exception of unhealthy food consumption; the standard group reported a larger mean decrease (95% CI) in consumption of unhealthy food compared with the enhanced group (- 4.6 [- 6.8, - 2.5] vs. -0.7 [- 2.9, 1.4], p = 0.01). At 6 months, significant improvements in weight and the physical component of the quality of life measure were observed for both groups compared with their baseline level. Compared with baseline, at 12 months, the standard group showed significant improvement in BMI (mean [95% CI], - 0.5 [- 1.0, - 0.1]) and the enhanced group showed significant improvement in the physical component of the quality of life (2.9 [0.7, 5.2]).

CONCLUSIONS

Adding strategies to address psychosocial barriers to a culturally tailored diabetes prevention program was not successful for improving weight loss among urban Indigenous adults.

TRIAL REGISTRATION

(if applicable): NCT02266576. Registered October 17, 2014 on clinicaltrials.gov. The trial was prospectively registered.

Social network influences and the adoption of obesity-related behaviours in adults: a critical interpretative synthesis review

BACKGROUND

Obesity is a key risk factor for developing a long-term condition and a leading cause of mortality globally. The limited evidence associated with interventions that currently target obesity-related behaviours demand new approaches to tackle this problem. Given the evidence that social ties are implicated in the gaining and reduction of weight, the use of social networks in interventions is potentially a novel and useful means of tackling this health issue. There is a specific gap in the literature regarding what and how social network properties and processes together with environmental and individual factors influence the adoption of positive and negative obesity-related behaviours in adults.

METHODS

To address this gap in developing an integrated and holistic conceptual approach, a critical interpretative synthesis was undertaken following a line of argument synthesis as an analytical strategy.

RESULTS

Twenty-four studies were included. The data-driven themes meso-micro network processes, contextual and individual factors, and types of ties and properties were identified individually as components and causes of different health scenarios. Nevertheless, these drivers do not act on their own. As a consequence, developing multi-agent coalitions considering cross-level influences between the data-driven themes are two mechanisms that are created to understand more in-depth how social networks and the environment influence the adoption of obesity-related behaviours. These two new constructs point to a dynamic multilevel set of influences between multiple constructs, developing scenarios where positive and negative health results are identified.

CONCLUSIONS

This critical interpretative synthesis offers a new means of exploring the application of social network properties and mechanisms in the 'obesity' field. The synthesizing argument created during the analysis process might be considered by health policy-makers, who might need to contemplate the wider open system of socially connected individuals and harness these forces to design new interventions where social networks and other contextual and individual factors operate together in a complex multilevel environment influencing obesity-related behaviours and practices.

Obesity and its association with sociodemographic factors, health behaviours and health status among Aboriginal and non-Aboriginal adults in New South Wales, Australia

BACKGROUND

High body mass index (BMI) is the second leading contributor to Australia's burden of disease and is particularly prevalent among Aboriginal peoples. This paper aims to provide insight into factors relating to obesity among Aboriginal adults and Aboriginal-non-Aboriginal differences.

METHODS

Cross-sectional analysis of data from the 45 and Up Study, comparing obesity (BMI ≥30 kg/m2) prevalence and risk factors among 1515 Aboriginal and 213 301 non-Aboriginal adults in New South Wales. Age-sex-adjusted prevalence ratios (PRs) for obesity by sociodemographic factors, health behaviours and health status were estimated (multivariable log-binomial regression) for Aboriginal and non-Aboriginal participants separately. We quantified the extent to which key factors (physical activity, screen time, education, remoteness, area-level disadvantage) accounted for any excess Aboriginal obesity prevalence.

RESULTS

Obesity prevalence was 39% among Aboriginal and 22% among non-Aboriginal participants (PR=1.65, 95% CI 1.55 to 1.76). Risk factors for obesity were generally similar for Aboriginal and non-Aboriginal participants and included individual-level and area-level disadvantage, physical inactivity, and poor physical and mental health, with steeper gradients observed among non-Aboriginal participants for some factors (Pinteraction <0.05). Many risk factors were more common among Aboriginal versus non-Aboriginal participants; key factors accounted for >40% of the excess Aboriginal obesity prevalence.

CONCLUSION

A substantial proportion of the excess obesity prevalence among Aboriginal versus non-Aboriginal participants was explained by physical activity, screen time, education, remoteness and area-level disadvantage. Socioeconomic and health behaviour factors are potential targets for promoting healthy BMI, but these must be considered within the context of upstream social and cultural factors. Adults with health needs and disability require particular attention.