I recently had a hair analysis and was very high on these exact things; strontium, magnesium and calcium. I recently completed my 11th liver cleanse so I believe that it had an impact on my hair analysis readings. Since I was ridding my body of many calcium deposits and also ingesting a large portion of magnesium ( Epsom Salts ), the excess comes out of the body. I don't know if you are also doing liver cleanses, but this may be a possible factor they are high if you are doing them.