I have recently been reading the work of Abram Hoffer, M.D., Ph.D, F.R.C.P, and am most impressed with his work and research into the causes of Schizophrenia. Firstly, he describes Schizophrenia not as something to be suppressed with drugs, rather he calls it a disease which needs to be cured, and as it is a syndrome there are multiple factors which need to be addressed. For example, in his book 'Orthomolecular Treatment for Schizophrenia ’ he describes a number of factors which contribute to the symptoms of Schizophrenia: allergies known as cerebral allergies, vitamin B-3 and B-6 dependencies, vitamin deficiencies such as scurvy or pellagra, essential fatty acid deficiencies, mineral deficiencies such zinc deficiency, toxic reactions to lead or to drugs, LSD and similar hallucigins, infections such as rheumatic fever, syphilis, and many others. He also goes into how he has cured many Schizophrenics using vitamins such a Niacin, Vitamin C, water fasting them if they are allergic, etc.
I highly recommend his work if you have loved ones suffering from the disease, best of luck, God bless.