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 .
Sociologists study social events, interactions, and patterns. They then develop theories to explain why these occur and what can result from them. In sociology, a theory is a way to explain different aspects of social interactions and to create testable propositions about society (Allan 2006). For example, early in the development of sociology, Ãmile Durkheim was interested in explaining the social phenomenon of suicide.