Analysis of minerals in human tissue using the innovative technology of spectrophotometry. Our body needs at least 20 minerals and other micronutrients to fully function. Ideally, we should get all the necessary nutrients from food, but the low level of minerals in soil and the consumption of pre-processed foods may cause our body to lose its mineral balance. We are generally lacking in iodine, magnesium, selenium, zinc and chromium. Chromium and iodine are the main minerals that support the endocrine system (hormones), affecting both blood sugar and thyroid function. Toxic heavy metals that bind cellular particles such as structural proteins, enzymes and nucleic acids interfere with the proper functioning of the body. Heavy metals enter human tissue through the air we breathe in and by hands.