The nutritionist talked about the reserves of vitamin B12 in the liver, going beyond a plant-based diet may cause a deficiency of this element. The endocrinologist Mayra Rao warned about this on the radio station "Moscow Speaks". There are some traces of vitamin B12 in fermented foods, but it is the inactive form. Therefore, it is impossible to fulfill the need for this vitamin in plant foods. Our stores of vitamin B12 are stored in the liver, and these stores can last for several years. Therefore, when a person first switches to a plant-based diet, he may not notice anything, but over the years there is a risk that a vitamin B12 deficiency will develop. And here you can not help him with any product - you will have to add drugs.