OIT, or Oral Immunotherapy, is a medical treatment designed to help individuals with food allergies, particularly to peanuts or tree nuts. The process involves gradually introducing small amounts of the allergenic food into the patient's diet, allowing their immune system to build tolerance over time. This method aims to reduce the severity of allergic reactions and improve the quality of life for those affected. The treatment typically starts with a very low dose, which is slowly increased under medical supervision. OIT is part of a broader approach to managing food allergies, which may also include avoidance strategies and the use of epinephrine for severe reactions.