Lack of nutrients cause disease and toxins also cause disease.  However, we are not screened or treated for either before we are given drugs, chemotherapy, radiation, and surgery.  Pharmaceutical products are mostly or almost entirely designed to address symptoms, and not cure issues.  Unless we learn and read, someone else will decide what treatments we will receive.  If we want to be in the drivers seat, please read, and become informed.  We need to make the effort to learn about all the ingredients and their effects in our water, food, vaccines, and pharmaceutical products before we consume them.  The podcasts Dr. Russell Blaylock, board-certified neurosurgeon, at http://www.blaylockhealthchannel.com are a great source of useful information.  Howard Straus has a great weekly broadcast at https://www.voiceamerica.com/show/1951/the-power-of-natural-healing.  Wish all of you the best.