Nutritional Intervention for Sustaining Health (NURISH) Trial

The goal of this clinical trial is to learn if increasing adherence to a Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet pattern improves brain and heart health relative to a healthy control diet in middle-aged adults.The main questions it aims to answer are: Does the MIND diet improve cognitive performance and heart health relative to a control diet? Researchers will compare the MIND diet group to a control (a healthy diet that does not match the MIND diet) to see if the MIND provides more benefit to health. Participants will: Consume one meal that follows the MIND diet or a control meal every day for 3 months Visit the lab before and after the 3 months of meals for tests. Keep a record of the food they eat during the study.