You reminded me of a woman patient I had. She was 59, just retired from a government job two years before. Neighbors found her on the ground one day. It looked like a stroke at first, but wasn’t. She went to the hospital and they ran tons of tests trying to figure out what was wrong.
She spent months in a very good hospital before being sent to the nursing home to die. They couldn’t do anything for her. She was on a feeding tube, which she pulled out daily, crawled on the floor, couldn’t talk, hit at everyone.
Looking through her records, our facility doctor noticed an odd lab, a copper deficiency. Within 3 weeks of being given a copper supplement, she was talking and thinking again. She ate real food, and became continent again. She was pleasant. Her gait was never back to normal but she could walk across a room. That no one at big, important hospital never noticed is criminal.
Those books are still in print, in affordable paperback. They changed my entire approach to eating and health. In spite of a genetic illness, vitamin and mineral supplements have helped me live a long life with physical and mental fitness.