According to Dr Michael Nehls from Germany, lithium as a trace mineral is effective for brain fog, Alzheimer, as well as aggresive behavior due to Covid 19 and the mRNA vaccine.
Lithium is found in trace amounts in the soil and mineral water but they vary depending on the region. Certain cereals and night shade plants (potatoes and tomatoes) as well as some spices are rich in lithium.
Ignore the first 3:30.