I think it's a combination of things. Contaminated water, soil and air. The chemicals put in our food supply. Lack of outside exercise. Relying on pharmaceuticals for health care. As a society we should push for a more natural way of being. Instead of planting decorative plants and trees in public areas, plant fruit baring instead. If someone is hungry, just pick it and eat it. If there's plenty, preserve it for winter. Encourage community gardens. Teach children how to garden or raise small animals for food. If an entire community participates we could abolish hunger.