There are lots of people who were dying and went on a 85% raw diet and became healthy. See this site (Natural Healing) for examples and the Health Food Store Page for raw food bars and greens drinks which contain barley grass, wheat grass, alfalfa grass, spirulina (blue-green algae), chlorella (green algae) and other stuff. Spirulina is not raw but it is a superfood from the sea which is loaded with trace minerals. Also the plant does not need to fight against gravity and have its roots search for minerals. It just lies there and lets the sea bring minerals to it.