Zeratsky, Katherine

Abstract Background Personalized meal planning by registered dietitian nutritionists (RDNs) is time‐intensive. Large language models (LLMs) may automate drafting meal plans, but their nutritional accuracy in clinical practice is uncertain. Methods In this proof‐of‐concept study, five outpatient RDNs and four LLMs (Gemini, CoPilot, ChatGPT 4.0, and customized ChatGPT 4.0) each generated 3‐day meal plans for five validated clinical scenarios. Effectiveness was defined as accuracy in meeting pre‐specified energy, protein, carbohydrate, fat, and sodium targets. Time to create plans and RDN comfort (self‐rated confidence in nutritional accuracy and clinical appropriateness on 1–5 Likert scale) were recorded. Three independent RDNs, blinded to source, analyzed nutrient content using Nutritionist Pro. Group differences were assessed with t ‐test and ANOVA. Results All LLMs and RDNs produced feasible meal plans. LLMs generated meal plans in under 1 min, whereas RDNs required a mean of 44 min per scenario. RDNs reported comfort levels ranging from 3.8 to 4.8. Across most scenarios, LLM plans delivered a smaller proportion of requested energy than RDN plans, which more consistently approached energy targets. Both groups performed similarly for the Mediterranean diet scenario. Overall, protein accuracy did not differ. However, in chronic kidney disease, LLMs undershot the guideline‐based protein target, while RDNs tended to modestly exceed it. Accuracy for low‐carbohydrate, fat, and sodium diets was comparable. Conclusion LLMs can rapidly generate clinically plausible meal plans but are less reliable than RDNs in achieving prescribed energy and selected macronutrient goals. Prompt precision is essential for nutrient‐specific targets. A hybrid model in which RDNs refine LLM‐generated drafts may leverage efficiency without sacrificing clinical accuracy.

Abstract Background Immigrants to the United States often face challenges from limited healthcare access and less healthy environments which contribute to rising obesity and cardiovascular risk. Purpose To assess the feasibility and effectiveness of a community-based social network intervention for cardiovascular risk reduction among Hispanic and Somali adults. Methods A social network-informed, community-based participatory research-derived health promotion intervention was delivered by Hispanic and Somali lay health promoters (HPs) to members of their social networks over 1 year (12 biweekly sessions in months 0-6; 12 biweekly check-ins in months 7-12). Using a closed-cohort stepped wedge cluster randomized design, social networks were randomly assigned to receive the intervention immediately or after a delay of 1 year. Measurements at baseline, 6 months, and 12 months were derived from 6 of the American Heart Association’s “Life’s Simple 7”: BMI, blood pressure, fasting glucose, cholesterol, physical activity and dietary quality (range 0-12, with higher values indicating lower cardiovascular risk). Waist circumference and proportion of participants who achieved >5% body weight loss were also assessed. Results Four hundred seventy-five participants were enrolled among 51 HPs (29 Hispanic; 22 Somali). There was a statistically significant improvement in cardiovascular risk in the intervention group (n = 246) compared with controls (n = 229) at 6 months (0.4 [1.8] vs. −0.1 [1.7]; P = .03) that was not sustained at 12 months (0.5 [1.9] vs. 0.3 [1.8]; P = .38). There was a statistically significant higher proportion of participants who lost >5% of body weight in the intervention group compared with controls at 12 months (37% [15] vs. 18% [7.9]; P = .02). Reductions in weight and waist circumference in the intervention group compared with controls did not achieve statistical significance. Conclusion A social network intervention, delivered by lay HPs was feasible and resulted in a modest improvement of cardiovascular risk and clinically significant weight loss. Clinical Trial Identification Number NCT05136339.

Introduction: Despite being healthier than the general population on arrival, immigrants to the US often face systemic barriers to healthy lifestyle behaviors and increased risk of cardiovascular disease (CVD). Self-efficacy has been associated with healthy diet and physical activity behaviors, but associations and construct validity have not been well studied in large samples of immigrant populations. Hypothesis: Self-efficacy for a healthy diet and physical activity will be associated with better dietary quality and intake and more physical activity, respectively. We also assessed the construct validity of measurement scales in this population. Methods: Set in southeast Minnesota and embedded with the Rochester Healthy Community Partnership, a 20-year community-based participatory research partnership, the Healthy Immigrant Community study enrolled Hispanic/Latinx and Somali immigrants into a randomized intervention to reduce obesity and CVD risks. Baseline assessments included biometric measures and self-reports of dietary intake, physical activity, and quality of life in English, Spanish, or Somali. Two self-efficacy items (“How confident are you that you can eat a healthy diet?”; “How confident are you that you can participate in regular exercise or physical activity?”) were rated as a percentage interval (0%=not at all confident; 25%; 50%=somewhat confident; 75%; 100%=very confident). Results: In total, 451 participants, 268 (59%) Hispanic/Latinx and 183 (41%) Somali, completed baseline assessments for this analysis. The mean age was 45 years (range=18-87), 59% were female, and 37% lacked health insurance over ≤12 months. Participants reporting more confidence to eat a healthy diet were more likely to eat fruits and vegetables as snacks ( p =<0.001), and less likely to drink fruit drinks or sports drinks ( p =0.02) or regular soda ( p =<0.001). Those reporting more confidence to be physically active were also reported higher levels of physical activity ( p =0.001). Validated self-efficacy scales had a wide distribution of scores, suggesting that the measures can be appropriately used among these immigrant communities. Conclusion: Higher self-efficacy for a healthy diet and physical activity were significantly associated with healthier eating and physical activity behaviors. Lifestyle interventions to reduce CVD risk may benefit from incorporating culturally tailored strategies to enhance self-confidence and support health equity in immigrant communities.

Abstract Background: Self-efficacy theory proposes that confidence to engage in a health behavior is associated with engaging in that specific behavior. Most research examining self-efficacy has been conducted with white young adult populations. This secondary analysis examined the association of self-efficacy (i.e., confidence) for healthy eating and physical activity in two immigrant communities. Methods: At enrollment into the Healthy Immigrant Community study, a clinical weight management and cardiovascular risk reduction intervention set in southeastern [state], 475 participants completed assessments about their confidence for healthy eating and physical activity. Measurements also included self-reports of dietary quality and intake, physical activity, quality of life, and biometric assessments. Study materials were available in English, Spanish, and Somali. Results In total, 450 adults (Hispanic/Latinx = 267; Somali = 183) completed measures at baseline and were included for analysis. Their average age was 45 years (range 18–87) and 59% were female. Confidence for healthy eating was significantly associated with self-report of eating healthy snacks ( p = < 0.0001) and less consumption of high-calorie drinks ( p = 0.02) and regular soda ( p = < 0.0001). Confidence to be physically active was significantly associated with more self-reported physical activity ( p = < 0.01). Conclusions Confidence to eat healthy and be physically active appears to be associated with having a healthier diet and higher levels of physical activity. Given the large sample size and strength of the associations, it also appears that the theoretical model of self-efficacy can be effectively measured and applied within these immigrant populations. Self-efficacy theory may be useful in understanding potential mediating mechanisms when designing future interventions with immigrant communities. ClinicalTrials.gov registration: NCT05136339; April 23, 2022

Introduction: Immigrants to the United States often experience structural barriers to healthy nutrition and physical activity, which increases their risk of developing obesity, cardiovascular disease (CVD), and other chronic conditions. In our prior work with immigrant communities to co-develop interventions to improve nutrition and physical activity, mood was identified as a possible mediating factor. Hypothesis: We hypothesized that self-reported negative mood would be associated with unhealthy lifestyle behaviors such as poor nutrition and less physical activity. We also evaluated the relationship between mood and sociobehavioral factors such as social support and community belongingness. Methods: The Healthy Immigrant Community (HIC) study, set in Rochester, Minnesota and embedded with the Rochester Healthy Community Partnership, is a randomized, waitlist-controlled obesity and CVD risk reduction intervention. Community-based mentoring and education for health behaviors are delivered by trained health promoters, who are members of the immigrant populations, to their social networks. Baseline self-reported and biometric measures assessed nutrition, physical activity, self-efficacy, and sociobehavioral effects on healthy lifestyle behaviors. On a single-item rating of mood over the past 7 days, responses of poor or fair were considered “negative”, while good, very good, or excellent were considered “positive”. Results: The HIC study enrolled 475 adult participants; 268 Hispanic/Latino and 181 Somali participants completed baseline measures and were included in this analysis. Of the 449 participants, 107 (24%) reported “negative” mood. This group was more likely to be Hispanic/Latino (74%), female (68%), uninsured in the past 12 months (46%), or younger age (mean = 41 years; range = 18-79). Participants who endorsed negative mood at baseline had lower healthy nutrition scores ( p =0.02), lower physical activity scores ( p =0.03), and less confidence in eating healthily ( p =0.001). Those reporting negative mood also reported less support from family and friends to eat healthy ( p =<0.001) and be physically active ( p =0.01), accessed community resources for healthy eating ( p =0.001) and physical activity ( p =<0.01) less often, and reported less sense of belonging to their community ( p =0.01) than those with positive mood. Conclusion: Negative mood was significantly associated with eating a less healthy diet and being sedentary, lower confidence in maintaining a healthy diet, less perceived social support for healthy behaviors, and less sense of belonging to the community among Hispanic/Latino and Somali immigrants. Behavioral interventions designed to support a healthy lifestyle may benefit from incorporating culturally-aligned mood management and sociobehavioral strategies to reduce CVD risk and promote health equity in immigrant populations.

Abstract Background Immigrants to the United States, on average, accumulate cardiovascular risk after resettlement, including obesity. There is a need to co-create interventions to address these disparities, and mood may be an important mediating factor.Methods The Healthy Immigrant Community (HIC) study, set in southeast Minnesota, enrolled 475 adult participants in a weight loss intervention to reduce cardiovascular risk. Baseline questionnaires assessed mood, nutrition, physical activity, self-efficacy for healthy eating and physical activity, social support, and cohesion. A single-item mood rating of poor or fair was considered “negative”, while ratings of good, very good, or excellent were considered “positive”.Results A total of 449 HIC participants (268 Hispanic/Latino and 181 Somali) with complete baseline measures and were included in this analysis. Participants endorsing negative mood compared to those endorsing positive mood had lower scores for healthy eating (p = 0.02) and physical activity levels (p = 0.03), lower confidence in eating a healthy diet (p = 0.001), and felt less of a sense of belonging to their community (p = 0.01). Those endorsing negative mood also reported receiving less social support from their family and friends to eat healthy (p = < 0.001) and be physically active (p = 0.01), and less often accessed community resources for healthy eating (p = 0.001) and physical activity (p = < 0.01) compared to participants reporting positive mood.Conclusions Negative mood was associated with less healthy nutrition, lower confidence in eating healthy, sedentary lifestyle, and perceived lack of belonging to the community. Integrating mood management and self-efficacy strategies may enhance the effectiveness of lifestyle interventions among immigrants who report negative mood.ClinicalTrials.gov registration: NCT05136339; April 23, 2022

Purpose To examine the feasibility and acceptability of a social network weight loss intervention delivered by lay health promoters (HPs) to immigrant populations. Design Single-arm, non-randomized, pilot study of a social network weight loss intervention developed by a community-based participatory research partnership and delivered by HPs. Setting Community-based setting in Southeastern Minnesota, United States. Sample Somali and Hispanic immigrants to the United States: 4 social networks of adults (2 Hispanic and 2 Somali) with 39 network participants. Intervention Twelve-week behavioral weight loss intervention delivered by HPs (4 weeks in-person and then 8 weeks virtual). Measures Feasibility was assessed by recruitment and retention rates. Acceptability was assessed by surveys and focus groups with HPs and participants. Behavioral measures included servings of fruits and vegetables, drinking soda, and physical activity. Physiologic measures included weight, blood pressure, glucose, cholesterol, and triglycerides. Analysis Paired t-tests of pre- to post-intervention changes at the end of 12 weeks of treatment. Results Recruitment was feasible and post-intervention was 100%. Participants highly rated the intervention on satisfaction, motivation, and confidence to eat a healthy diet, be physically active, and lose weight. Participants were motivated by group social support and cohesion of their social networks. On average, participants lost weight (91.6 ± 15.9 to 89.7 ± 16.6 kg, P < .0001), lowered their systolic blood pressure (133.9±16.9 to 127.2 ± 15.8 mm Hg; P < .001), lowered their diastolic blood pressure (81 ± 9.5 to 75.8 ± 9.6 mm Hg; P < .0001), had more servings of vegetables per day (1.9 ± 1.2 to 2.6 ± 1.4; P < .001), and increased their physical activity (2690 ± 3231 to 6595 ± 7322 MET-minutes per week; P = .02). Conclusion This pilot study of 2 immigrant communities who participated in a peer-led weight loss social network intervention delivered during the COVID-19 pandemic demonstrated high feasibility and acceptability. Participants lost weight, improved their health status, and improved their health behaviors.