Podiatrist podiatric medical school, followed by a three or four-year hospital-based surgical residency. Podiatrists are licensed in all 50 states. Worldwide, in many countries the term "podiatrist "refers to allied health professionals who specialize in the treatment of the lower extremity, particularly the foot. Podiatrists in these countries are specialists in the diagnosis and treatment of foot pathology, but not through surgical means. In some circumstances these practitioners will further specialise and, following further training, perform reconstructive foot and ankle surgery. In contrast, American podiatrists who hold a Doctor of Podiatric Medicine (D.P.M.) complete surgical residencies, and thus all practitioners are
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