Unveiling the epigenetic impact of vegan vs. omnivorous diets on aging: insights from the Twins Nutrition Study (TwiNS).

BACKGROUND: Geroscience focuses on interventions to mitigate molecular changes associated with aging. Lifestyle modifications, medications, and social factors influence the aging process, yet the complex molecular mechanisms require an in-depth exploration of the epigenetic landscape. The specific epigenetic clock and predictor effects of a vegan diet, compared to an omnivorous diet, remain underexplored despite potential impacts on aging-related outcomes. METHODS: This study examined the impact of an entirely plant-based or healthy omnivorous diet over 8 weeks on blood DNA methylation in paired twins. Various measures of epigenetic age acceleration (PC GrimAge, PC PhenoAge, DunedinPACE) were assessed, along with system-specific effects (Inflammation, Heart, Hormone, Liver, and Metabolic). Methylation surrogates of clinical, metabolite, and protein markers were analyzed to observe diet-specific shifts. RESULTS: Distinct responses were observed, with the vegan cohort exhibiting significant decreases in overall epigenetic age acceleration, aligning with anti-aging effects of plant-based diets. Diet-specific shifts were noted in the analysis of methylation surrogates, demonstrating the influence of diet on complex trait prediction through DNA methylation markers. An epigenome-wide analysis revealed differentially methylated loci specific to each diet, providing insights into the affected pathways. CONCLUSIONS: This study suggests that a short-term vegan diet is associated with epigenetic age benefits and reduced calorie intake. The use of epigenetic biomarker proxies (EBPs) highlights their potential for assessing dietary impacts and facilitating personalized nutrition strategies for healthy aging. Future research should explore the long-term effects of vegan diets on epigenetic health and overall well-being, considering the importance of proper nutrient supplementation. TRIAL REGISTRATION: Clinicaltrials.gov identifier: NCT05297825.

Cardiometabolic Effects of Omnivorous vs Vegan Diets in Identical Twins: A Randomized Clinical Trial.

Importance: Increasing evidence suggests that, compared with an omnivorous diet, a vegan diet confers potential cardiovascular benefits from improved diet quality (ie, higher consumption of vegetables, legumes, fruits, whole grains, nuts, and seeds). Objective: To compare the effects of a healthy vegan vs healthy omnivorous diet on cardiometabolic measures during an 8-week intervention. Design, Setting, and Participants: This single-center, population-based randomized clinical trial of 22 pairs of twins (N = 44) randomized participants to a vegan or omnivorous diet (1 twin per diet). Participant enrollment began March 28, 2022, and continued through May 5, 2022. The date of final follow-up data collection was July 20, 2022. This 8-week, open-label, parallel, dietary randomized clinical trial compared the health impact of a vegan diet vs an omnivorous diet in identical twins. Primary analysis included all available data. Intervention: Twin pairs were randomized to follow a healthy vegan diet or a healthy omnivorous diet for 8 weeks. Diet-specific meals were provided via a meal delivery service from baseline through week 4, and from weeks 5 to 8 participants prepared their own diet-appropriate meals and snacks. Main Outcomes and Measures: The primary outcome was difference in low-density lipoprotein cholesterol concentration from baseline to end point (week 8). Secondary outcome measures were changes in cardiometabolic factors (plasma lipids, glucose, and insulin levels and serum trimethylamine N-oxide level), plasma vitamin B12 level, and body weight. Exploratory measures were adherence to study diets, ease or difficulty in following the diets, participant energy levels, and sense of well-being. Results: A total of 22 pairs (N = 44) of twins (34 [77.3%] female; mean [SD] age, 39.6 [12.7] years; mean [SD] body mass index, 25.9 [4.7]) were enrolled in the study. After 8 weeks, compared with twins randomized to an omnivorous diet, the twins randomized to the vegan diet experienced significant mean (SD) decreases in low-density lipoprotein cholesterol concentration (-13.9 [5.8] mg/dL; 95% CI, -25.3 to -2.4 mg/dL), fasting insulin level (-2.9 [1.3] µIU/mL; 95% CI, -5.3 to -0.4 µIU/mL), and body weight (-1.9 [0.7] kg; 95% CI, -3.3 to -0.6 kg). Conclusions and Relevance: In this randomized clinical trial of the cardiometabolic effects of omnivorous vs vegan diets in identical twins, the healthy vegan diet led to improved cardiometabolic outcomes compared with a healthy omnivorous diet. Clinicians can consider this dietary approach as a healthy alternative for their patients. Trial Registration: ClinicalTrials.gov Identifier: NCT05297825.

Quality Improvement in Itself Changes Your Thinking: Lessons From Disseminating Quality Improvement Methods Through a Multisite International Collaborative Palliative Care Project in India.

PURPOSE: Seven major palliative care (PC) centers in India were mentored through the Palliative Care-Promoting Assessment and Improvement of the Cancer Experience (PC-PAICE) by US and Australian academic institutions to implement a quality improvement (QI) project to improve the accessibility and quality of PC at their respective centers. The objective was to evaluate the experiences of teams in implementing QI methods across diverse geographical settings in India. METHODS: A quota sampling approach was used to elicit perspectives of local stakeholders at each site. The Consolidated Framework for Implementation Research informed development of a semistructured interview guide. Analysis leveraged deductive and inductive approaches. RESULTS: We interviewed 44 participants (eight organizational leaders, 12 clinical leaders, and 24 team members) at seven sites and identified five themes. (1) Implementing QI methods enabled QI teams to think analytically to solve a complex problem and to identify resources. (2) Developing a problem statement by identifying specific gaps in patient care fostered team collaboration toward a common goal. (3) Making use of QI tools (eg, A3 process) systematically provided a new, straightforward QI toolkit and improved QI teams' conceptual understanding. (4) Enhancing stakeholder engagement allowed shared understanding of QI team members' roles and processes and shaped interventions tailored to the local context. (5) Designing less subjective processes for patient care such as assessment scales to identify patient's symptomatic needs positively changed work practices and culture. CONCLUSION: Engaging and empowering multiple stakeholders to use QI methods facilitated the expansion and improvement of PC and cancer services in India. PC-PAICE demonstrated an efficient, effective way to apply QI methods in an international context. The impact of PC-PAICE is being magnified by developing a cadre of Indian QI leaders.

Considerations for Fostering Palliative Care Awareness in Developing Contexts: Strategies From Locally Initiated Projects in India.

CONTEXT: Lack of palliative care (PC) awareness is a barrier to its utilization in developing contexts. OBJECTIVES: To identify and understand strategies that changed awareness of the concepts and value of palliative care in a multi-site quality improvement project in India. METHODS: The Palliative Care - Promoting Assessment and Improvement of the Cancer Experience (PC-PAICE) evaluation team conducted 44 semi-structured interviews with clinician and organization stakeholders at seven geographically dispersed sites. We used inductive and deductive approaches in this secondary analysis to identify emerging themes. RESULTS: We identified the following strategies to improve awareness of concepts and value of palliative care. Strategy 1: Educate medical trainees, staff, and the community about palliative care and its concepts. Sub-strategies: Participate in community events. Integrate PC concepts into early medical education. Standardize training for practitioners. Strategy 2: Design and disseminate India-specific research to reinforce awareness of the value of palliative care. Sub-strategies: Publish and use India-specific palliative care research. Strategy 3: Facilitate communication between providers and departments to improve awareness of palliative care services and its concepts. Sub-strategies: Create referral frameworks and network with providers referring to palliative care to change awareness of available services and palliative care concepts. CONCLUSION: To increase palliative care utilization, program development can include community and provider-focused efforts on awareness of the concepts and value of palliative care. These three strategies held salience across sites representing diverse Indian geographic and cultural settings; as such, they may be applicable to other contexts.

How sugar-sweetened beverage tax revenues are being used in the United States.

We sought to describe how revenues from sugar-sweetened beverage (SSB) excise taxes in 7 U.S. cities are being allocated, who is benefiting from these investments, and whether allocations are consistent with the original intent of tax legislation. We collected information from public documents and key informants about allocations in the most recent fiscal year available (ranging from 2018 to 2021). Across the 7 U.S. cities with taxes, the average annual revenue from SSB taxes totaled $133.9 M. In the fiscal year studied, cities allocated a total of $133.2 M in SSB tax revenues. Human and community capital investments totaled $89.6 M (67% of all allocations) funding early childhood development, community infrastructure improvements, and youth and workforce development. Health-related investments totaled $36.9 M (28% of total allocations), funding access to healthy foods and beverages; support for physical activity opportunities; promotion of overall physical, mental or social health and wellbeing; health and nutrition education; chronic-disease prevention and management; and reducing SSB consumption. In the 3 cities that specified how tax revenues would be spent, allocations were consistent with promised uses of revenues. In addition, 85% of aggregated revenues ($112.9 M) were targeted to support work and programs in impacted communities (communities that experience health inequities, discrimination and exclusion). SSB tax revenues are supporting initiatives to improve community health, develop human and community capital, and advance equity. These investments may yield additional health benefits beyond those resulting from lower SSB consumption. Consistent tracking and public reporting on revenue allocations would increase transparency and accountability.