Psyllium is a fiber supplement, used primarily for the treatment of constipation due to its being a good source of soluble fiber. As a supplement, psyllium is derived from the seed husks of a plant called Plantago ovata.
Social theory is interdisciplinary and draws upon ideas from fields as diverse as anthropology and media studies. Social theory of an informal nature, or authorship based outside of academic social and political science, may be referred to instead as  social criticism  or  social commentary .
Social fact is a theory created by sociologist Emile Durkheim to describe how values, culture, and norms control the actions and beliefs of individuals and society as a whole. Durkheim and Social Fact. In his book The Rules of Sociological Method, Durkheim outlined social fact, and the book became one of the foundation texts of sociology.