Have you ever asked yourself why that happens?
Well, there definitely is more than one possible explanation. So if you want to learn more, check out today’s post!
Nausea is not painful but it can be highly unpleasant and it often comes with an urge to vomit.
The purpose of nausea is to stop you from repeating whatever caused the discomfort. The physiology behind it has yet to be clarified, however, four pathways in the human body have been identified that can create a sensation of nausea or vomiting:
Stimulation of the Central Nervous System (CNS) – Stimulation of the CNS can occur due to elevated intracranial pressure, irritation of the meninges (i.e. blood or infection), and extreme emotional triggers such as anxiety.
Activation of the Chemoreceptor Trigger Zone – Located in our brain outside the blood-brain barrier, the chemoreceptor trigger zone is readily exposed to substances such as toxins and medications circulating through our blood.
Triggering of the Peripheral Pathways – Triggered in the gastrointestinal tract and other organs, this could be a sign for toxins present in the gastrointestinal lumen. Other possible activators are distension of the gastrointestinal lumen from blockage or dysmotility of the bowels.
Disturbances to the Vestibular System – Disturbances to the vestibular system in the inner ear can originate from movements causing motion sickness and dizziness.