Evaluation of the NHS England Low-Calorie Diet implementation pilot: a coproduced mixed-method study.

Background: National Health Service England piloted a low-calorie diet programme, delivered through total diet replacement and behaviour change support via 1 : 1, group or digital delivery, to improve type 2 diabetes in adults with excess weight.

Aim: To coproduce a qualitative and economic evaluation of the National Health Service low-calorie diet pilot, integrated with National Health Service data to provide an enhanced understanding of the long-term cost-effectiveness, implementation, equity and transferability across broad and diverse populations.

Research Questions: What are the theoretical principles, behaviour change components, content and mode of delivery of the programme, and is it delivered with fidelity to National Health Service specifications? What are the service provider, user and National Health Service staff experiences of the programme? Do sociodemographics influence programme access, uptake, compliance and success? What aspects of the service work and what do not work, for whom, in what context and why? Can the programme be improved to enhance patient experience and address inequities? What are the programme delivery costs, and policy implications for wide-spread adoption?

Methods: A mixed-methods study underpinned by a realist-informed approach was delivered across five work packages, involving: semistructured interviews with service users ( = 67), National Health Service staff ( = 55), service providers ( = 9); 13 service provider focus groups; and service user surveys ( = 719).

'The Health-Secure Partnership': Study protocol for the development of a school- & community-based intervention for promoting healthy nutrition among rural adolescents in The Gambia.

Introduction: Interventions addressing malnutrition (under- and overnutrition) among adolescents have not been developed in The Gambia. We aim to coproduce the first phase of 'The Health-Secure Partnership' (HSP) - an innovative multicomponent intervention for adolescents in rural areas of The Gambia. Inference drawn from existing evidence and public contribution suggest that the future intervention would ideally involve nutrition-specific components coupled with changes to wider school and community contexts, delivered in partnerships between schools and local communities.

Food marketing, eating and health outcomes in children and adults: a systematic review and meta-analysis.

The marketing of unhealthy foods has been implicated in poor diet and rising levels of obesity. Rapid developments in the digital food marketing ecosystem and associated research mean that contemporary review of the evidence is warranted. This preregistered (CRD420212337091) systematic review and meta-analysis aimed to provide an updated synthesis of the evidence for behavioural and health impacts of food marketing on both children and adults, using the 4Ps framework (Promotion, Product, Price, Place).

Factors influencing malnutrition among adolescent girls in The Gambia: a mixed-methods exploratory study.

Background: In The Gambia, existing research to understand and address malnutrition among adolescent girls is limited. Prior to the conduct of large-scale studies, formative research is needed. The aim of this mixed methods, cross-sectional study was to explore cultural contexts relevant to nutritional status, feasibility and appropriateness of recruitment and data collection methods (questionnaires and anthropometric measures), and plausibility of data collected.

Co-Designing Recipe Resources to Support Healthy Eating in African-Caribbeans in the United Kingdom: An Academic and Community Partnership Approach.

Introduction: The wealth of free food-based resources available to UK consumers on healthy eating and nutrition provides very limited illustrations of ethnic foods including African-Caribbean cuisines. This inequality in available resources limits the ability of African-Caribbean communities to effectively manage their health and reduces the cultural competence of health professionals.

Objective: The aim was to co-design healthier versions of several traditional African-Caribbean recipe resources by working in partnership with academics, a community-based Third Sector organisation, and their service-users.

A Qualitative evaluation in community settings in England exploring the experiences of coaches delivering the NHS Low Calorie Diet programme pilot to ethnically diverse participants.

Background: The management of type 2 diabetes (T2D) within diverse ethnic populations requires a culturally tailored approach. However, little is known about the experiences of coaches delivering interventions for T2D, such as the National Health Service (NHS) Low Calorie Diet (LCD) programme, to people from diverse ethnic backgrounds.

Objective: To explore the experiences of coaches delivering an NHS programme using total diet replacement approaches to individuals from diverse ethnic backgrounds, to inform the effective tailoring and equitable delivery of future interventions.

Views, perceptions, and experiences of type 2 diabetes or weight management programs among minoritized ethnic groups living in high-income countries: A systematic review of qualitative evidence.

Background: Prevalence of both obesity and type 2 diabetes can be higher in patients from certain ethnic groups, yet uptake and adherence to current support within these groups is lower, leading to widening health inequalities in high-income countries.

Objectives: The main objective of this study is to understand the views, perceptions, and experiences of and barriers and facilitators in relation to the uptake and adherence to weight management and type 2 diabetes programs in minoritized ethnic groups in high-income countries.

Methods: CINAHL, MEDLINE, PsycINFO, Scopus, Academic Search Complete, and PubMed were searched for English language studies undertaken in community-dwelling adults residing in high-income countries, who are from a minoritized ethnic group within the country of study.

South Asian individuals' experiences on the NHS low-calorie diet programme: a qualitative study in community settings in England.

Background: Existing literature examines barriers to the provision of ethnically diverse dietary advice, however, is not specific to total diet replacement (TDR). There is a lack of literature from the UK, limiting the potential applicability of existing findings and themes to the UK context. This study addresses this gap in research by interviewing participants of South Asian ethnicity who have undertaken the National Health Service (NHS) low-calorie diet programme (LCD) for people with type 2 diabetes living with overweight or obesity.

Improving adult behavioural weight management services for diverse UK Black Caribbean and Black African ethnic groups: a qualitative study of insights from potential service users and service providers.

Background: A significantly higher proportion of UK Black ethnic adults live with overweight or obesity, compared to their White British counterparts. The role of obesity in excess infection rates and mortality from COVID-19 has increased the need to understand if weight management interventions are appropriate and effective for Black ethnic groups. There is a paucity of existing research on weight management services in Black populations, and whether anticipated or experienced institutional and interpersonal racism in the healthcare and more widely affects engagement in these services.

'Health Connections': study protocol for the development of a coproduced, community-based diet, physical activity, and healthy weight intervention for UK black and Asian adults.

Introduction: A limited number of diet, physical activity and weight management programmes suitable for UK black and Asian populations have been evaluated. We aim to coproduce 'Health Connections-an ambitious new intervention to support dietary and physical activity choices, and maintaining a healthier weight, tailored to the needs of black Caribbean, black African and South Asian adults. Our existing research and public engagement work suggests that the intervention should be designed to be embedded in communities and delivered by peer educators supported by health professionals.

Comparison of the Effectiveness of Low Carbohydrate Versus Low Fat Diets, in Type 2 Diabetes: Systematic Review and Meta-Analysis of Randomized Controlled Trials.

The clinical benefit of low carbohydrate (LC) diets compared with low fat (LF) diets for people with type 2 diabetes (T2D) remains uncertain. We conducted a meta-analysis of randomized controlled trials (RCTs) to compare their efficacy and safety in people with T2D. RCTs comparing both diets in participants with T2D were identified from MEDLINE, Embase, Cochrane Library, and manual search of bibliographies.

Weight misperception and psychological symptoms from adolescence to young adulthood: longitudinal study of an ethnically diverse UK cohort.

Background: To evaluate the association between weight misperception and psychological symptoms in the Determinants of young Adults Social well-being and Health (DASH) longitudinal study.

Methods: A longitudinal sample of 3227 adolescents, in 49 secondary schools in London, aged 11-16 years participated in 2002/2003 and were followed up in 2005/2006. A sub-sample (N = 595) was followed up again at ages 21-23 years in 2012/2013.

Nutrient Composition of Popularly Consumed African and Caribbean Foods in The UK.

(1) Background: Traditional foods are important in the diets of Black Africans and Caribbeans and, more widely, influence UK food culture. However, little is known about the nutritional status of these ethnic groups and the nutrient composition of their traditional foods. The aim was to identify and analyse African and Caribbean dishes, snacks and beverages popularly consumed in the UK for energy, macronutrients and micronutrients.

Associations of dietary intake with cardiometabolic risk in a multi-ethnic cohort: a longitudinal analysis of the Determinants of Adolescence, now young Adults, Social well-being and Health (DASH) study.

Unfavourable dietary habits, such as skipping breakfast, are common among ethnic minority children and may contribute to inequalities in cardiometabolic disease. We conducted a longitudinal follow-up of a subsample of the UK multi-ethnic Determinants of Adolescent Social well-being and Health cohort, which represents the main UK ethnic groups and is now aged 21-23 years. We aimed to describe longitudinal patterns of dietary intake and investigate their impact on cardiometabolic risk in young adulthood.

Fruit and vegetable consumption and mental health across adolescence: evidence from a diverse urban British cohort study.

Background: Evidence on the relationship between fruit and vegetable consumption (FV) and mental health in adolescence is sparse and inconsistent. Social determinants of FV include ethnicity, family environments and economic disadvantage. We investigated the relationship between FV and mental health in the British multi-ethnic Determinants of Adolescents (now young Adult) Social well-being and Health (DASH) longitudinal study.

Global cities and cultural diversity: challenges and opportunities for young people's nutrition.

Childhood obesity is a common concern across global cities and threatens sustainable urban development. Initiatives to improve nutrition and encourage physical exercise are promising but are yet to exert significant influence on prevention. Childhood obesity in London is associated with distinct ethnic and socio-economic patterns.

Faith-Based Institutions as Venues for Obesity Prevention.

Purpose Of Review: The aim of this current narrative review is to critique the scope and value of recent studies with a focus on obesity-related health promotion in faith organizations.

Recent Findings: Electronic database searches, scanning of the reference lists of identified articles, and hand searching of journals for articles written in English and published in 2013-2016 revealed 16 studies. Half of the studies involved African-Americans, in churches and with predominantly female participants.

Exploring childhood obesity prevention among diverse ethnic groups in schools and places of worship: Recruitment, acceptability and feasibility of data collection and intervention components.

Small-scale, detailed exploration of the recruitment, assessment, and evaluation processes of obesity intervention among minority ethnic children. The study took place in schools and places of worship during 2008-2010 in London, UK. Measures included 3-day food diaries, 24 h dietary recalls, the Youth Physical Activity Questionnaire, accelerometry, and diet and physical activity self-efficacy questionnaires.

The Determinants of young Adult Social well-being and Health (DASH) study: diversity, psychosocial determinants and health.

Purpose: The Determinants of young Adult Social well-being and Health longitudinal study draws on life-course models to understand ethnic differences in health. A key hypothesis relates to the role of psychosocial factors in nurturing the health and well-being of ethnic minorities growing up in the UK. We report the effects of culturally patterned exposures in childhood.

Effect of air pollution and racism on ethnic differences in respiratory health among adolescents living in an urban environment.

Recent studies suggest that stress can amplify the harm of air pollution. We examined whether experience of racism and exposure to particulate matter with an aerodynamic diameter of less than 2.5 µm and 10 µm (PM2.

Does cultural integration explain a mental health advantage for adolescents?

Background: A mental health advantage has been observed among adolescents in urban areas. This prospective study tests whether cultural integration measured by cross-cultural friendships explains a mental health advantage for adolescents.

Methods: A prospective cohort of adolescents was recruited from 51 secondary schools in 10 London boroughs.

Racism, ethnic density and psychological well-being through adolescence: evidence from the Determinants of Adolescent Social Well-Being and Health longitudinal study.

Objective: To investigate the effect of racism, own-group ethnic density, diversity and deprivation on adolescent trajectories in psychological well-being.

Design: Multilevel models were used in longitudinal analysis of psychological well-being (total difficulties score (TDS) from Goodman's Strengths and Difficulties Questionnaire, higher scores correspond to greater difficulties) for 4782 adolescents aged 11-16 years in 51 London (U.K.