The next time you go shopping for produce, don't trust the mineral claims on fruits and vegetables, nuts and seeds. If you want to boost the mineral content of the foods you buy, buy organic. Organic gardening almost always produces higher mineral concentrations than conventionally grown foods.
Most of the produce you buy in a grocery store does not have anything close to the mineral profile it is supposed to have according to nutritional textbooks. This is because minerals are not manufactured by plants, whereas vitamins and phyto nutrients are. Minerals have to be absorbed through the soil, and if they are not present in the soil, then the plant's roots cannot take them up, and therefore they will not be present in the plant.Since soils today are so over-farmed and depleted of all but a few basic minerals, most of our produce lacks the minerals they should contain. Each plant has a different mineral absorption profile. A tomato will absorb a certain number of minerals (around 56), and it will absorb no more. It will only absorb the 56 that it is programmed to absorb. Of course, it can only absorb what is present in the soil. So even though a tomato should contain 56 minerals, you may be eating a tomato purchased at the grocery store that only contains 12 minerals or 7 minerals. You are missing out on all the minerals it could have.
Eat
Brazil nuts from time to time, because Brazil
nuts are the only commonly available nut that's grown wild innaturally mineralized soils. Brazil nuts are mostly wild crafted,meaning that they are collected out in nature from wild plants, and they are very high in selenium. In fact, just eating three Brazil nuts a day gives you the minimum daily requirement for selenium. Of course, selenium is a very important mineral for preventing Alzheimer's disease, preventing cancer and many other disorders. It's also a great anti-viral mineral.
The point of this is that, when we read in a book that Kale is a great source of
calcium or that broccoli is a good source of selenium, we really have to imagine an asterisk behind that statement. Kale maybe a good source of calcium if there was calcium present inthe soil in which it was grown. Broccoli may be a good source of selenium, but only if selenium was present in the soil.
Read entire article 
