I wonder if there are any benefits to eat earth. What I mean by earth is the topsoil that is sometimes on vegetable (I eat organic vegetables and some of them like spinach are full of topsoil).
I found this article (a study about why people, in certain culture, eat earth) but it doesn't clearly answer my question as it's about clay and not topsoil. Topsoil has a highest concentration of organic matter than clay.
I wonder if we can digest the soil nutrient (Phosphorus, Potassium, Calcium, Magnesium, Manganese, Zinc, Copper) just as we would if there were coming from vegetable and fruits.
What are the other pros and cons of eating earth (soil)? (I am aware of the cons about parasite and bacteria but my question is not about these risks. It's about nutritive value of earth.)