As you know, onion is a product with many beneficial properties. Onion is a source of vitamins B, C, essential oils, and minerals. It perfectly enhances immunity, is a substance prophylactic for many diseases. Well known the antioxidant properties of this vegetable as well.
However, as warned by American doctors, we should be careful to choose the onion and to avoid improper storage from which may appear the black marks. They are the first sign of damage. These marks indicate that onions may be contaminated with toxic substances that provoke cancer, according to Thetimeshub.in.
If you see these black marks, you should know that the product probably already has a toxic aflatoxin connection which provokes dangerous processes in the body, improving, for example, the probability of developing liver cancer.
There are several reasons that contribute to the deposition of aflatoxin in the product. This happens when high humidity and high-temperature storage of onions, improperly packaged, exposed to insects, and contact with contaminated water.