Causes of Nausea

Nausea is the urge or feeling to want to regurgitate or throw up the food which has been consumed. This is an annoying feeling which precedes the act of vomiting. Several factors cause nausea as it is not a disorder or disease, but it is a symptom of many health conditions. Though it is not a serious issue, constant nausea causes discomfort. So, following are several causes of nausea.

Causes of Nausea:
Most common causes of nausea are side effects of medicines, pregnancy, food poisoning and gastroenteritis. Apart from these, there are other reasons which cause nauseous sensations like acid reflux disease, motion sickness, alcohol consumption, vertigo and constipation. Following are some factors which trigger nausea.

Side effects of medicines: Many common medicines and drugs which impart nausea like effects are those used for anesthesia and chemotherapy. Some times, if an individual is allergic to certain drug, then taking that drug can induce nausea.

Gastroenteritis: Infections of the stomach such as infections because of the presence of parasites in intestines, bacterial infections, stomach flu, etc cause discomfort and irritate upper stomach, including the feeling of nausea associated with loss of appetite.

Alcohol intoxication: Chronic alcoholism and first time or excessive consumption of alcohol renders the liver unable to metabolize it, resulting in nauseous feeling.

Pregnancy: In the first trimester of pregnancy, nearly 80% of women suffer from nausea or morning sickness. Nausea during this period develops because of increase in estrogen levels in pregnant woman’s body, hypoglycemia, increase in progesterone levels resulting in increased stomach acid levels and heightened acuteness of sense of smell and human chorionic gonadotropin.

Vertigo: Due to a dysfunction which develops in vestibular system of inner ear, vertigo causes imbalance and disorientation, resulting in nausea because of constant feeling of motion even if the person is stationary.

Motion sickness: Motion sickness is one of the most common causes. Often, people suffering from motion sickness feel like throwing up while traveling. Often, such people prefer to travel on an empty stomach. This happens because sometimes the brain transmits signals which induce vomiting if it registers any motion sensation.

Constipation: Often, the causes behind nausea and constipation are common. They include medicinal side effects, pregnancy, dehydration, etc. Chronic or prolonged constipation can result in several other stomach problems such as stomach flu, toxicity, acidity, etc that in turn cause nauseous sensation.

Other causes of nausea: Bowel obstruction disease, cancer, severe anxiety, viewing of gory or violent images, stress, overeating, diarrhea, gallbladder infection, liver infection, typhoid, toxic shock syndrome, hepatitis, pancreatitis, etc are other causes of nausea.

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