Access to nutritious foods is essential to promoting health and preventing disease. Although malnutrition can affect anyone, children, older adults, and people with chronic diseases are especially at risk of "hidden hunger." Healthy diets are a critical component in addressing chronic diseases including obesity, diabetes, and heart disease. A childhood diet lacking the necessary vitamins and minerals, despite adequate calories, can cause irreversible damage that has educational, financial, and long-term health consequences reaching far into adulthood. The multifaceted and complex racial and ethnic disparities in the United States have exacerbated food and nutrition insecurity among vulnerable populations and need to be prioritized by the health-care system. As the world prepares for a new normal beyond the pandemic, we must prioritize nutrition to promote health and prevent and treat disease.