Due to the metabolic changes, loss of appetite and psychological reason, cancer patients consume less food and they may easily suffer from malnutrition. The Asyra Testing utilizes the principle of magnetic field of human body to screen the body condition in a non-invasive way. It indicates the food intolerance (what kind of foods should avoid eating), analysis on internal nutrient content (whether there is lack of fatty acid, vitamin, mineral substance or not), internal toxin screening (whether there is excessive metallic elements or toxins), and condition of organ and meridian function. Applying the Asyra Testing to cancer patient makes the doctors know whether there is food intolerance and deficiency of internal nutrient content. Based on the result of Asyra Testing, doctors can then provide a specific nutritional support program for the patients.