An internist is a physician who focuses on the diagnosis and treatment of conditions that affect the adult population—both acute and chronic.These doctors are often who adults see as their primary physicians because they treat a broad range of illnesses that do not require surgical or specialist interventions. They also work to help a patient maintain optimal health in order to prevent the onset of disease.In addition to treating the common cold and flu, internists also treat chronic diseases like diabetes and heart disease.

A medical toxicologist treats drug overdoses, whether intentional or unintentional, but they also study the specific effects various drugs and medications have on our health in specific doses. In addition to drug-related illnesses, a toxicologist can treat poisonous bug bites, snake bites and reactions to toxic plants or food. Toxicologists can also treat and diagnose exposure to any kind of toxic chemicals, gases (such as carbon monoxide) or pesticides as well as lead, mercury and arsenic poisoning. If you work in or live close to industrial facilities, you might worry about exposure to certain chemicals and gases that would adversely affect your body's normal function. Don't hesitate to consult with a toxicologist about your specific concerns.