Nausea is the sensation of having to vomit. There are several reasons why people experience nausea. It can be the result of an illness for one thing, or it can be a reaction to the immediate invasive. Nausea can also occur due to heat exhaustion, fever, hunger, or an irritation in the throat. Still other causes of nausea are alcohol or drug intoxication, ulcers, dizziness, and food poisoning.
Cases of nausea should never be ignored, and they should be brought to the attention of a doctor as soon as possible. For many patients, even just a little bit of marijuana can work wonders in terms of controlling nausea and easing the urge to vomit.