Humans now exist in an environment that we are not adapted for. The essential requirements that we require for optimal health and resilience are no longer present. The diseases that now plague humans, especially those who live in the West, were uncommon or non-existent for our ancient ancestors. Cancer, heart disease, Alzheimer’s, etc… are a result of a total shift in lifestyle of evolutionary mismatch. Our bodies have simply not had time to adapt to modern conditions and this causes us to suffer immensely.