Study of Healthy and Sustainable Diets Combining Dietary Advice, Behavioral Support, and Food Provision for Adults Aged 18 to 70

What this Trial Is About

Researchers are evaluating the effectiveness of an optimized lifestyle intervention that combines dietary advice, behavioral support, and provision of key foods compared to dietary advice with behavioral support or dietary advice alone. The goal is to improve nutritional status, metabolic risk factors, and contribute to planetary sustainability. This study involves 300 adult participants from diverse socioeconomic areas in Gothenburg, Sweden, and aims to provide insights into sustainable and health-promoting dietary patterns in Nordic conditions. The study randomly assigns participants into three groups of 100 each for a twelve-week intervention one group receives dietary advice, behavioral support, and key foods the second group receives dietary advice with behavioral support and the control group receives dietary advice based on the SWITCH diet alone. The SWITCH diet emphasizes whole grains, vegetables, fruits, legumes, and sustainable seafood while limiting processed foods, added sugars, and salt. Behavioral support includes personalized coaching sessions, educational materials, and practical tools. Food support provides key ingredients like whole grains, vegetables, fruits, legumes, and seafood to the optimized intervention group to facilitate adherence. Participants will undergo clinical assessments at baseline, week 7, and week 13, including measurements of body data, blood pressure, blood glucose, blood lipids, and inflammatory markers. Dietary intake and sustainability factors will also be monitored. Researchers will measure changes in cardiometabolic risk factors such as cholesterol levels, blood pressure, glucose, and insulin resistance. Secondary outcomes include diet changes, nutritional and inflammatory markers, and planetary sustainability measures. The study will also explore links between diet, lifestyle changes, gut microbiota, and metabolic responses.

The SWITCH Dietary and Behavioural Intervention Study