From https://www.dietaryguidelines.gov

The foods and beverages that people consume have a profound impact on their health. The scientific connection between food and health has been well documented for many decades, with substantial and increasingly robust evidence showing that a healthy lifestyle—including following a healthy dietary pattern— can help people achieve and maintain good health and reduce the risk of chronic diseases throughout all stages of the lifespan: infancy and toddlerhood, childhood and adolescence, adulthood, pregnancy and lactation, and older adulthood. The core elements of a healthy dietary pattern are remarkably consistent across the lifespan and across health outcomes. Since the first edition was published in 1980, the Dietary Guidelines for Americans have provided science-based advice on what to eat and drink to promote health, reduce risk of chronic disease, and meet nutrient needs.

PDF link to Dietary_Guidelines_for_Americans-2020-2025

Article from Consumer Reports from Feb 2023 How worried should you be about mercury in Tuna