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Abbreviation for Doctor of Naturopathic Medicine; Natural death; Newcastle disease; Normal delivery; Notifiable disease.

Nerve conduction study.

The umbilicus, the former site of attachment of the umbilical cord, usually found in about the middle of the abdominal wall. The appearance of the navel depends on how the cord was cut and also on the condition of the underlying muscle. If the muscles are firm and the cut was close enough to the belly, the navel will go…

Stomach queasiness, the urge to vomit. Nausea can be brought on by many causes, including systemic illnesses (such as influenza), medications, pain, and inner ear disease.

A system of therapy that is based on preventive care and on the use of physical forces such as heat, water, light, air, and massage as primary therapies for disease. Some naturopaths use no medications, either pharmaceutical or herbal. Some recommend herbal remedies only. A few who are licensed to prescribe may recommend pharmaceuticals in…

A type of study in which the researcher very carefully observes and records some behavior or phenomenon, sometimes over a prolonged period, in its natural setting while interfering as little as possible with the subjects or phenomena. In medical research, a naturalistic study usually involves observing people as they go about their normal activities. The presence of…

Immunity that is naturally existing, Natural immunity does not require prior sensitization to an antigen.

Causing natriuresis, the excretion of an excessively large amount of sodium in the urine. A hybrid of the Latin natrium = sodium and the Greek ouresis = a making water.

The excretion of an excessively large amount of sodium in the urine. Natriuresis is similar to diuresis (the excretion of an unusually large quantity of urine), except that in natriuresis the urine is exceptionally salty. Natriuresis occurs with some diuretics and diseases (as of the adrenal) and can lead to the salt-losing syndrome characterized by dehydration, vomiting, low blood pressure,…

The National Institutes of Health (NIH) is an important U.S. health agency. It is devoted to medical research. Administratively under the Department of Health and Human Services (HHS), the NIH consists of 20-some separate Institutes and Centers. NIH’s program activities are represented by these Institutes and Centers. They are, along with a brief overview of their essential missions, as follows: The…