Composition of the human body not in an essential biological role. The average adult human body contains approximately atoms and contains at least detectable traces of 60 chemical elements. About 29 of these elements are thought to play an active positive role in life and health in humans. The relative amounts of each element vary by individual, mainly due to differences in the proportion of fat, muscle and bone in their body. Persons with more fat will have a higher proportion of carbon and a lower proportion of most other elements (the proportion of hydrogen will be about the same). The numbers in the table
Society for the Scientific Study of Sexuality professional members. Society for the Scientific Study of Sexuality The Society for the Scientific Study of Sexuality (SSSS, or "quad-S"), formed in 1957, is a non-profit, international professional membership organization, based in the United States, that says it is "the oldest professional society dedicated to the advancement of knowledge about sexuality." It reports to have more than 1,000 members and has a quarterly newsletter, "Sexual Science". It produces two other publications: According to its website, SSSS was established in 1957 by psychologist Albert Ellis to encourage the rigorous, systematic study of sexuality. In 1980, organizer Robert Francoeur invited Philadelphia biologist