Abstract
The structure of human body is roughly scaled down from whole body, organ and tissue, and cell. Abundant knowledge intra scale has been accumulated owing to the recent progress of molecular and cellular biology, and life sciences. However, it is difficult to clearly characterize the interaction and a scientific causal relation among each scale. I would like to propose the utilization of "a fiber-like structure or a string-like structure" in each scale to study "the effect against gravity" as a cutting edge to elucidate mechanical interactions inter scale and the biochemical process among scales. "The Health Science under the Gravity", which composed of the evolution of homo sapience and/or human beings under "the field of the Gravity", organization of knowledge about human activities under the field of the Gravity, may contribute to give effective solutions available for especially aged society.