Katie Ann Nutrition is a holistic nutrition practice in Citrus Heights, California. The business offers Nutrition Response Testing, described as a non-invasive method of analyzing the body for unknown allergens and toxins, including food allergies, metals, chemicals, and immune system responses. Its process includes an initial analysis, a personalized whole food health improvement program, and follow-up visits to monitor progress. Katie Ann Nutrition also offers whole food supplements made with nutrients as they are found in nature, including formulas with plant and animal extracts and desiccates. The practice emphasizes wellness, healing, and detox support.