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
Effect of spaceflight on the human body Effect of spaceflight on the human body Venturing into the environment of space can have negative effects on the human body. Significant adverse effects of long-term weightlessness include muscle atrophy and deterioration of the skeleton (spaceflight osteopenia). Other significant effects include a slowing of cardiovascular system functions, decreased production of red blood cells, balance disorders, eyesight disorders and a weakening of the immune system. Additional symptoms include fluid redistribution (causing the "moon-face" appearance typical in pictures of astronauts experiencing weightlessness), loss of body mass, nasal congestion, sleep disturbance, and excess flatulence. The engineering problems associated with leaving Earth and developing