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nrgastro.2012.32-f3

Human Beings have an Autonomic Nervous System (ANS) that is actually comprised of three separate subsystems, the Parasympathetic Nervous System (PNS), the Sympathetic Nervous System (SNS) and the Enteric Nervous System (ENS).

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Wild billberries. Photograph courtesy of R G Daigle.  6013998915 45574db68c

Bilberries are closely related to blueberries, which arrived in the USA around 1920. But Europeans have been using bilberry leaves and dried berries for centuries, long enough to develop folk remedies and applications before scientific inquiry was part of explaining how and why things that work do what they do.