Yes, there are metabolic conditions that are abnormal in the foot, ankle,and leg. So, podiatrists can treat metabolic conditions in that sense. I look at it this way: podiatrists treat a person as a whole, not just a foot part, or an ankle part, or a leg below the knee part. Any local pathology in the foot, ankle, or leg, if not treated promptly, can negatively affect the patient as a whole whether systemically or psychologically or both. The foot, ankle and leg is part of the whole. It is not an isolated entity. This is the way all podiatrists should treat their patients: holistically (i.e. I am treating Mr. Bell as a whole person, not Mr. Bell's SER ankle fracture). If the metabolic condition is already affecting the mental status or cardiac status or renal status, then IM or some other MD or DO should intervene. But if the metabolic condition is only isolated to below the knee, then the podiatrist can handle it but HOLISTICALLY.