Is there a connection between soil fertility and human health? In the 1940s, this was one of the hottest topics in the soil conservation movement. Researchers had just discovered that vitamins played a critical role in animal and human nutrition, and from the 1920s to 1950s they found that a score of mineral elements — especially trace elements like manganese, boron, copper, zinc, iron, and molybdenum — were essential for plant, animal and human health. The discovery of certain trace elements cleared up centuries-old confusion about what caused the geographic distribution of some mysterious animal and human diseases. The most famous discovery was that iodine deficiencies in certain soils caused endemic goiter and cretinism. The solution was simple — add a little bit of iodine to salt for both animals and humans, and the goiters and other iodine deficiency symptoms disappeared. Similarly, soil deficiencies of selenium and cobalt were linked to several animal diseases, which could be treated with supplements. Go here to read the full article! https://www.ecofarmingdaily.com/the-albrecht…/…