1 doctor weighed in:

What happens in the body that causes nausea? Are nerves involved, or hormones involved, or both?

1 doctor weighed in

In brief: Both

Various blood borne hormones (or medications/drugs) cause a signal within the area postrema, which is a region in the brain located on the floor of the fourth ventricle -- outside of the blood-brain barrier. This means hormones cause the brain to release a neurotransmitter that causes nerves to trigger nausea.

In brief: Both

Various blood borne hormones (or medications/drugs) cause a signal within the area postrema, which is a region in the brain located on the floor of the fourth ventricle -- outside of the blood-brain barrier. This means hormones cause the brain to release a neurotransmitter that causes nerves to trigger nausea.
Dr. Lester Thompson
Dr. Lester Thompson
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