A healthy diet (Healthy diet) is a diet characterized by the composition of healthy foods (Healthy food), which is a diet that helps maintain or improve overall health. A healthy diet provides the body with essential nutrients such as fluids, nutrients, micronutrients and adequate calories. A healthy lifestyle that includes exercising every day along with a healthy diet can lead to a lower risk of obesity, heart disease, type 2 diabetes, hypertension and cancer. letters.