A food sensitivity test helps identify foods that may cause adverse reactions, such as digestive issues, headaches, and fatigue, which are often delayed and less severe than food allergies. Methods include elimination diets, IgG blood tests, MRT (Mediator Release Test), and ALCAT tests. These tests measure the body's response to specific foods and can guide dietary adjustments to improve health. However, the accuracy of some tests is debated, so it's best to consult with a healthcare provider for interpretation and advice.