What deficiency disease could be caused by dietary fiber?
If you eat a recommended amount of fiber, especially from
vegetables, as part of a balanced diet, it will cause no problems.
But if you get too much fiber, it can inhibit your body's
successful absorption of some minerals, such as iron, zinc,
magnesium and calcium. Also some people make the mistake of
substituting the fiber-foods for protein-foods or others. You
should get both.