Why Do We Sneeze? Everything You Need to Know (2024)

Overview

Sneezing is a mechanism your body uses to clear the nose. When foreign matter such as dirt, pollen, smoke, or dust enters the nostrils, the nose may become irritated or tickled. When this happens, your body does what it needs to do to clear the nose — it causes a sneeze. A sneeze is one of your body’s first defenses against invading bacteria and bugs.

When a foreign particle enters your nose, it may interact with the tiny hairs and delicate skin that line your nasal passage. These particles and contaminants range from smoke, pollution, and perfume to bacteria, mold, and dander.

When the delicate lining of your nose experiences the first tinge of a foreign substance, it sends an electric signal to your brain. This signal tells your brain that the nose needs to clear itself. The brain signals your body that it’s time for a sneeze, and your body responds by preparing itself for the impending contraction. In most cases, the eyes are forced shut, the tongue moves to the roof of the mouth, and the muscles brace for the sneeze. All of this happens in just a few seconds.

Sneezing, also known as sternutation, forces water, mucus, and air from your nose with an incredible force. The sneeze can carry with it many microbes, which can spread diseases like the flu.

Sneezes also perform another vital role in the body. In 2012, researchers from the University of Pennsylvania discovered that sneezing is the nose’s natural way to “reset.” The study found that cilia, the cells that line the tissue inside the nose, are rebooted with a sneeze. In other words, a sneeze resets the entire nasal environment. What’s more, the researchers found that sneezing didn’t have the same “reset” effect on people who have chronic nasal issues like sinusitis. Figuring out how to reactive those cells may help treat these ongoing issues.

Not all sneezes happen when foreign substances enter our nostrils. Sometimes, we find ourselves bracing for a sneeze’s impact at unusual moments.

Why do we close our eyes when we sneeze?

Closing your eyes is a natural reflex your body has each time you sneeze. Despite common lore, leaving your eyes open while you sneeze will not cause your eyes to pop out of your head.

Why do we sneeze when we’re sick?

Just like our body tries to clear house when a foreign substance enters the body, it also tries to eliminate things when we’re sick. Allergies, the flu, a common cold — they can all cause a runny nose or sinus drainage. When these are present, you may experience more frequent sneezing as the body works to remove the fluids.

Why do we sneeze when we have allergies?

Dust stirred up while cleaning may make anyone sneeze. But if you are allergic to dust, you may find yourself sneezing more often when you clean because of how frequently you come into contact with dust.

The same is true for pollen, pollution, dander, mold, and other allergens. When these substances enter the body, the body responds by releasing histamine to attack the invading allergens. Histamine triggers an allergic reaction, and symptoms include sneezing, runny eyes, coughing, and runny nose.

Why do we sneeze when looking at the sun?

If you walk out into the day’s bright sun and find yourself close to a sneeze, you’re not alone. According to the National Institutes of Health, the tendency to sneeze when looking at a bright light affects up to one third of the population. This phenomenon is known as photic sneeze reflex or solar sneeze reflex.

Why do some people sneeze multiple times?

Researchers aren’t sure why some people sneeze multiple times. It may be a sign that your sneezes aren’t quite as strong as a person who only sneezes once. It could also be a sign that you have ongoing or chronic nasal stimulation or inflammation, possibly as a result of allergies.

Can org*sms cause sneezes?

Indeed, it’s possible. Researchers have discovered that some people sneeze when they have sexual thoughts or when they org*sm. It’s not clear how the two things are connected.

Sneezing can be bothersome, especially if you find yourself running through a box of tissues every allergy season. However, sneezing is rarely a sign of a serious problem.

Some people with specific conditions may experience additional symptoms or complications if they sneeze too much. For example, people with frequent nosebleeds might experience more bleeding episodes with sneezing. People with migraines may experience additional discomfort if a sneeze occurs while a headache is present.

Not every person will respond to external stimuli or allergens the same as people around them. If you don’t sneeze after walking in a hay field or taking a deep breath from a bouquet of daisies, don’t worry. Some people’s nasal passages aren’t as sensitive.

If you begin frequently sneezing and cannot pinpoint any obvious cause, make an appointment to see your doctor. While a few sneezes may not be an indication of anything worrisome, it’s always better to talk about your new symptoms and look for an underlying issue than suffer frequent sneezing.

Whether you rarely sneeze or you’re frequently reaching for tissues, it’s important that you practice proper sneeze hygiene. The water and mucus you expel with each sneeze can carry microbes and bacteria that spread illnesses.

If you have to sneeze, cover your nose and mouth with a tissue. If you can’t grab a tissue quickly, sneeze into your upper sleeve, not your hands. Then, wash your hands with soap and water before touching another surface. This will help stop the spread of germs and disease.

Why Do We Sneeze? Everything You Need to Know (2024)

FAQs

Why Do We Sneeze? Everything You Need to Know? ›

Sneezing is your body's way of removing irritants from your nose or throat. It is a powerful, involuntary expulsion of air. While this symptom can be quite annoying, it's not usually the result of any serious health problem. Sneezing often happens suddenly and without warning.

Why do we sneeze in short answer? ›

When an individual inhales the dust enters the nose, these particles of dust pass through the hair in the nasal cavity. These disturbances send to the brain and create sneezing. Sneezing also helps in expelling the dust, making the air passage clean. Therefore, the individual sneezes when he inhales unclean air.

Why do we sneeze facts? ›

Sneezing is a mechanism your body uses to clear the nose. When foreign matter such as dirt, pollen, smoke, or dust enters the nostrils, the nose may become irritated or tickled. When this happens, your body does what it needs to do to clear the nose — it causes a sneeze.

Why do I sneeze 20 times in a row? ›

The most likely culprit behind your sneezing fits is allergies. With seasonal allergies, airborne triggers, like pollen, are found in higher levels in the air and can start a sneezing fit. Besides seasonal allergies, allergens from pets and dust can also cause frequent sneezing and may be why you can't stop sneezing.

Why do you only sneeze 3 times? ›

According to Laura Geggel, on LiveScience.com, the first sneeze likely breaks up the irritant, while the second brings it into the nose, and the third shoots it out.

What actually is sneezing? ›

A sneeze is a sudden burst of air expelled from the lungs through the nose and mouth. It's the result of the inflammation of the trigeminal nerve in the nose. This nerve is linked to the “sneeze center” of the brainstem and sends signals that prompt a person to sneeze.

Why do we sneeze 2 times? ›

Sneezing more than once is very normal. Sometimes it just takes more for you to clear an irritant from your nose. One study found that about 95% of people sneeze about four times a day.

What happens if we never sneeze? ›

“If we didn't sneeze, our bodies could allow potentially damaging substances into our sinuses or lungs.”

What happens if you refuse to sneeze? ›

If simply put, holding your sneeze is dangerous because of the energy it produces. A sneeze generates a significant pressure and when you hold the pressure, it can cause a rupture of your eardrums, irritation of the throat, and even in severe cases, rupture of blood vessels in your eyes or brain.

Do scientists know why we sneeze? ›

When the lining of your nose gets irritated—from a cold, pollen, dust, smoke, pepper, etc. —your body goes into reaction mode. Your “sneeze center,” located in the lower brain stem, is triggered. It sends out a signal to tightly close your throat, eyes and mouth.

Who sneezed 7 times in the Bible? ›

Elisha got up, paced for awhile as he prayed, and bent down near the child. Suddenly he heard him sneeze seven times.

Why do I sneeze 100 times a day? ›

If you find that you are suddenly sneezing all the time or even if you're sneezing only when someone nearby is smoking, this could be the culprit. You are suffering from adult-onset seasonal allergies. These allergies often do not present themselves until you're an adult.

Why do men sneeze so loud? ›

Because men tend to have larger muscles and more lung capacity than women, men generally sneeze more loudly. Where you let the sneeze come out can also influence sneeze volume. According to Dr. Richard Harvey, another ENT, “If you sneeze through your mouth, it will be louder.”

What is the record for most sneezes in a row? ›

The longest sneezing fit began #OTD in 1981. Donna Griffiths (UK) sneezed an estimated one million times in the first 365 days and sneezed at least once a day until the 977th day.

What is Achoo syndrome? ›

Autosomal Dominant Compelling Helioopthalmic Outburst (ACHOO) Syndrome is characterized by uncontrollable sneezing in response to the sudden exposure to bright light, typically intense sunlight. This type of sneezing is also known as photic sneezing.

How many sneezes in a row is normal? ›

While some people sneeze three or more times rather than twice, multiple sneezes in a row are more common than a single sneeze. According to Everyday Health, sneezing functions as a reset for our nasal environment.

Why do we close our eyes when we sneeze? ›

There's no definitive clinical data to explain why we close our eyes when we sneeze. Some people think that it could be to protect the eyes from irritants that are being expelled by our bodies with the sneeze. More research is needed to fully understand why closing our eyes is part of the automatic reflex.

Do you sneeze out of your mouth or nose? ›

Sneezing allows waste to exit through your nose.

Nerve signals from your brain stem direct your mouth's soft palate and uvula to move down a little; then, the tongue comes up to block the mouth so the majority of what you sneeze out will exit through your nose.

What happens if you sneeze with your eyes open? ›

“Pressure released from a sneeze is extremely unlikely to cause an eyeball to pop out even if your eyes are open.” Increased pressure from straining builds up in the blood vessels, not the eyes or muscles surrounding the eyes.

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