Reading Time: 8 minutesGlutathione is so important to your good health that it's found in nearly every cell in your body. It helps to neutralize free radicals and detoxify harmful chemicals in the environment, the processed foods you eat, the water you drink, and the household and health and beauty products you use. It also supports immune function and reduces inflammation. Glutathione and the building blocks for making glutathione naturally are found in foods and light therapy.