In many countries in Eastern Europe the soil is poor in iodine, which historically meant a lot of thyroid problems. Good news is that governments mostly solved

In many countries in Eastern Europe the soil is poor in iodine, which historically meant a lot of thyroid problems. Good news is that governments mostly solved the issue by requiring table salt to contain iodine. In some countries you can still buy table salt that doesn't contain iodine ("Himalayan" and so on) but people still use the mandated kind indirectly by buying bread and cheeses made with iodine. My point is the same can be done with magnesium and other minerals, which can solve the public health aspect while the soil is restored.