Another common soil and airborne toxin is Lead. Lead is especially dangerous to children from 0 to 5 but the greatest danger comes from airborne lead as the dust from Lead polluted soil can be easily ingested. Airborne lead can also be absorbed through the leaves of Hemp and most other plants. Lead affects nervous, renal (kidney) hematopoietic (blood forming) systems and may also harm the reproductive (endocrine), hormonal, hepatic (liver), cardiovascular, immune and gastrointestinal systems. Because the molecules in toxic heavy metals closely resemble beneficial minerals the body does not recognise them for the toxins they are and so stores them instead of eliminating them. This toxic build-up is responsible for many distressing symptoms and illnesses that result from heavy metal absorption. However, most plants do not readily absorb lead from the soil and it is generally slow to move in a plant. Lead absorption from the soil accumulates mainly in the fine roots and the leaves, not so much in the stems, seeds and flowers. Hemp can absorb a lot of lead. However, in an article published in July 2002, entitled “Industrial Hemp (Cannabis Sativa) growing on heavy metal contaminated soil, fibre quality and Phytomediation potential” Vol 16, P33-42, the following findings were reported: Examination carried out on the seeds, leaves, fibres and hurds by atomic spectroscopy found that accumulations in these parts are very different, the highest concentrations of heavy metals being in the leaves.
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So when it comes to medicinal Hemp extract, like CBD, one might ask: just how safe is it for human consumption? Can it transfer toxicity from heavy metals to users?
In a February 2015 edition of “High Times”, Daryl Hudson Phd, president of DOCSolutions, agricultural consultants on speciality fertilisers showed by tests that the extraction process (to produce Hemp paste from which CBD oils can be made) does indeed transfer toxins, both biological (fungal) and heavy metal in contaminated hemp plants.