Natural health care products are currently regulated under the Natural Health Product Regulations, under the authority of the Food and Drugs Act. The regulations address the sale of natural health products, manufacture, packaging, labelling and importation for sale of natural health products, the distribution of natural health products, and the storage of natural health products. Under the regulations, all natural health products require a Natural Product Number (NPN), analogous to the Drug Identification Numbers (DINs) used to identify and monitor drugs in Canada.
Public health has been described as "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals." It is concerned with threats to the overall health of a community based on population health analysis. The population in question can be as small as a handful of people or as large as all the inhabitants of several continents (for instance, in the case of a pandemic). Public health has many sub-fields, but typically includes the interdisciplinary categories of epidemiology, biostatistics and health services. Environmental health, community health, behavioral health, and occupational health are also important areas of public health.