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 .
Feminist theory. A sociological perspective that emphasizes the centrality of gender in analyzing the social world and particularly the uniqueness of the experience of women. There are many strands of feminist theory, but they all share the desire to explain gender inequalities in society and to work to overcome them.