A word that means "the study of cells in the nervous system" is "Oncology."
"neurocytology."
"neuropathy."
"hematopathy."

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Depends on which disease, but as a general rule eat healthy. many vegetables.                                                        hope my answer has come to your . you for posting your question here in we hope to answer more of your questions and inquiries soon. have a nice day ahead! : )     (p.s mark as brainliest if )