Spelt is an ancient grain that hasn’t undergone the level of hybridization of modern wheat. Spelt has higher amounts of protein and fibre and provides significant amounts of important nutrients like manganese, niacin, copper and phosphorus.  Some people who struggle to digest common wheat find spelt to be highly digestible. One reason for that could be that the gluten in spelt is water-soluble whereas the gluten in common wheat is not.