* Oxalic Acid: This substance causes problems with blood circulation and this substance connects with calcium. Giving calcium by the body can no longer be included. In these vegetables is much oxalic acid; Broccoli, spinach, carrots, parsley, rhubarb.
* Tannin: This is a poison type and it is so important that you not animals ingest this substance. This substance is found in: peas, figs, Fava Beans, Avocados.
* Cyanide: This substance may give problems to the throat (bag). This substance is in Brassica vegetables. Cabbage leaves also provide fermentation in the gut.
* Nitrate: This substance leads to cramps, because the oxygen in the blood by this substance is poorly distributed. This is for example in spinach and Comfrey
* Citrus Fruits: These works to laxative.