A new book on Steve Jobs by Walter Isaacson details some strange health habits he had which were clearly guided by false beliefs. To begin with, Jobs would consume a diet consisting only of a certain fruit or vegetable for weeks at a time, such as apples and carrots. The only reason I can think of that Jobs would do this is because he was told that apples and carrots were good for him and so he decided that if this was all he ate for a long period of time, that would be even better. However, while these foods have some positive qualities, they are not supposed to be the sole source of a diet.
Jobs reportedly also believed that his fruit, vegetable, nut, seed, and grain diet rid his body of toxins that would cause body odor. Thus, he felt there was no need to shower or wear deodorant regularly. Coworkers strongly disagreed. The irony of all of this is that the lack of certain proteins in a diet can interfere with detoxification and cause more bodily odor.
Other Article of Interest:
Michael Clarke Duncan Turns Vegetarian, Loses Weight, and Dies of a Heart Attack