Oh Kathleen, I just read your post. I think you misunderstood. The original question was if you (the person with AN) has a RELATIVE with schizophrenia.
Also, I am not up on my neurobiochemistry, but dopamine is one of the neurotransmitters out of balance in schizophrenia. Cortisol isn't a neurotransmitter, but a hormone, right? So any person can have high cortisol levels. Its the hormone released when we are stressed during the fight or flight response. Anyway, I don't think she said it causes schizophrenia, but can worsen psychosis and cause tumor growth? Which I totally buy. Think about it,stress contributes to so many illnesses. I wonder if just the stress from having a family member with a mental illness could increase your cortisol and then contribute to tumor growth. Or if its just genetic to have a body which misuses neurotransmitters and hormones? I think its all very interesting and possible....