According to published data, a Western-type diet provides between 19 and 31 mg of Si per day. On average, the American diet contains about 30 mg per day of silicon each day. Vegetables are the richest sources of silicon in human food, and they can supply and increase our body reserves better than meat or fruits. Hence, vegetarians often have higher silicon intakes than meat-eaters do.
The modern diet based on refined foods and GMO’s, with low consumption of vegetables, with poor soils and animals of industrial breeding, generates an inexorable diminution of the silicon content in the human tissues. (Carlisle,1974). The American scholar W.A. Price has also shown that the food of the primitive peoples contained ten times more silica than the modern industrialized diet (quoted by Heinz Scholz, 1987).