The purpose of this article is to identify, based on an analysis of specialized literature and previously obtained own data, intrinsic factors of a sanogenic nature that affect the digestion process in the small intestine. Modern approaches have been formulated about the digestion of nutrients in the small intestine, its main stages, the cellular elements directly involved in its implementation and the regulatory mechanisms that ensure the sanogenic level of digestive processes. Based on an analysis of the literature and previously obtained experimental data, a series of intrinsic factors with a sanogenic character were identified, at the level of cellular elements and organs that directly ensure digestion in the small intestine and the nervous and hormonal regulation of digestion in the small intestine.
