Causes of nausea and vomiting.


As pathetic as nausea is, vomiting has a function. To find out what makes you nauseous, it helps to understand why we have ever vomited.

Get Medical Information / Cindy Chang

Purpose of vomiting

Your body has evolved to protect you. A defense mechanism protects you from the toxic substances you may ingest.

When you eat something poisonous, you feel nauseous (want to vomit), several triggers. Taste and smell are two of the strongest. If it smells bad or tastes bad, your body may reject it as dangerous.

If you see, smell, or hear someone vomit, this can also cause vomiting. Your body is programmed this way because if everyone in your group ate the same thing and made someone sick, you could be next.

But what if no one else is sick or you are alone? You could still eat something bad for you. If it causes problems in the brain, especially dizziness, then your intestines are throwing it out, fearing the poison that could cause problems.

While vomiting has many causes, they all come down to three main things:

  1. Something irritates the brain
  2. Something irritates the intestines
  3. Are you pregnant

Gut irritants are more common than brain irritants, so why does the brain get the highest scores?

Well, this is the brain. If you suddenly feel bad or vomit without nausea, it is possible that something bad is happening inside your skull that is not good.

Brain-related causes of nausea

Your brain works in a very narrow range of happiness. If it has too much sugar, it won't work. If you don't have enough sugar, it won't work.

Eating fat is too demanding and requires a certain amount of oxygen. It can't be too hot or too cold, it can't be under too much or too low pressure. Basically, brains require a lot of maintenance.

Because many things can go wrong with the brain, the brain triggers vomiting much more often than necessary.

A brain injury that causes swelling inside the skull almost always causes vomiting, although it probably won't help the brain in any way. This is an unwanted result in which the body believes that any brain problem is related to what you ate.

However, knowing that brain malfunction can lead to vomiting reminds us of brain problems when nausea occurs for no apparent reason. Certain factors that affect the brain are more likely to cause nausea than others, including:

  • Concussion or traumatic brain injury : Brain trauma causes increased pressure or direct damage to brain tissue, leading to nausea. This always requires immediate medical attention.
  • Dizziness or motion sickness : Dizziness associated with motion sickness , or problems with the inner ear that resembles motion sickness, are the main causes of nausea. (There is a reason why nausea and nausea have the same root.)
  • Too much alcohol: Too much alcohol often causes vomiting because alcohol is toxic and affects your brain. It has the first effects, but when they get too strong, it tells your stomach to clear up.
  • Carbon monoxide poisoning : This cause can be mistaken for an infection, as symptoms of both conditions include headaches and nausea. Carbon monoxide poisoning should be treated with oxygen therapy .
  • Heat illness and dehydration : The brain does not like to be too hot and needs enough pressure to function properly. When conditions are bad, blame the stomach and empty the contents.

Bowel-related causes of nausea

Sometimes nausea and vomiting are triggered by things long before they affect the brain, which is usually better than waiting for the toxic substance to play through its higher functions.

The mechanism that causes the urge to vomit in the digestive tract (intestines) is complex, but essentially the point is to empty the stomach when something in it is dangerous for you.

That is why bacteria, viruses and all kinds of toxins can cause nausea and vomiting at the intestinal level. The most common causes of gut-related nausea are :

  • Food Poisoning – This is not really "food poisoning", foodborne illness is usually caused by bacteria or other insects present in what you eat. The most common causes are salmonella, listeria, and E. coli, which cause vomiting and diarrhea.
  • Infections – Other infections, often viruses, can directly affect the intestines. Norovirus is one of those notorious mistakes. People often say they have the " stomach flu ," but it is not the flu at all. ("Flu" is short for flu , which is a respiratory illness).

Nausea associated with pregnancy

Morning sickness is a common pregnancy symptom that can occur at any time of the day. If you feel nauseous and think you could get pregnant, a home pregnancy test and / or going to the doctor can tell you for sure.

Identifying the cause

Ultimately, the best way to determine the cause of an upset stomach is to rule out the simplest first: Have you been drinking? You are pregnant? Are you on the boat?

If not, look for additional characteristic symptoms.

  • Headaches – Brain problems are more likely. If you hit your head, go to the emergency room. If more than one person in the home has symptoms, consider carbon monoxide poisoning. Get out there, call 911 and ask the fire department to check it out.
  • Earache or sinus congestion. Consider the ear. The inner ear helps you balance and stay upright. Sometimes an infection can upset the balance of the inner ear. It could be dizziness.
  • Something you ate: Most contaminated food is digested without any problem. However, sometimes something can confuse you. Food poisoning is more likely if you are very old, very young, or have a weakened immune system.

Get the word of drug information

Sometimes nausea is a sign of a dangerous condition and requires a medical exam. In other cases, it is simply the body's defensive instinct. You have several treatment options for nausea, but in many cases, you just need to wait.

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