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Hair Analysis for Nutritional Deficiencies?

Did you know that hair is a not only an excellent biological material for DNA testing, but also a reliable source of information for determining the toxic metals you have accumulated through the years? However, despite being the gold standard for toxic metal testing, hair analysis is still controversial when it comes to nutritional analysis and, therefore, rarely used. Because the structure of hair remains fairly constant, the minerals and heavy metals tend to be […]