In the early 20th century, "mouth-breather" was a technical term used by doctors to describe children who were breathing through their mouths due to an underlying medical condition.

Being called a mouth breather used to be a derogatory term used to describe someone who was, well, here's the Urban Dictionary definition: 1. Literally, someone who lacks enough intelligence that they never learned to breathe through their nose. 2. A really dumb person.

Mouth Breathing Treatment – Myofunctional Therapy Myofunctional therapy is a type of physical therapy intended to improve tongue posture, nasal breathing, correct swallow patterns, and even facial posture. The therapist often uses exercises to train the face, neck, and mouth to function better.

These anatomical changes can change the overall appearance of your face. People who chronically breathe through their mouths may appear with their upper jaw protruding over the lower, a more prominent forehead, and a long, narrow face.

Is mouth tape dangerous? Mouth taping not only doesn't help you to breathe through your nose, it's also highly dangerous. It can cause obstructed breathing and create other more serious sleep disorders like obstructive sleep apnea and sleep disruption.

Brazil has the highest prevalence, which exceeds 50% based on clinical assessment [1–3]. On the other hand, the lowest prevalence is in India, at 4–7% based on clinical assessment [6–8]. The prevalences of mouth breathing in England and New Zealand are 23% and 19%, respectively [4, 5].

Mouthbreather. Another '80s insult that went right over Eleven's head, a mouthbreather in US slang is defined as a stupid or dim person. Mike further elaborates when explaining this to Eleven as 'a dumb person, a knucklehead'.

Bill Williams of Suwanee Dental Care in Georgia writes in an explainer to patients that not only are these changes often permanent but can be harmful to the bones and facial muscles. He explains that a raised upper lip, and a lower jaw in a constant open posture is the result, along with a “vacant facial expression.”

Mouth breathing causes bad breath, poor sleep, early aging, gum disease, and high blood pressure in adults. According to Healthline, mouth breathing can lead to crooked teeth, facial deformities, or poor growth in children.

Dangers and side effects of mouth taping

• Blocking your airflow, making it harder for you to breathe while you're sleeping.
• Sleep apnea.
• Skin irritation or allergic reaction from the tape.
• Aspiration - if you vomit or have acid reflux when your mouth is taped, the stomach contents could go into your lungs.

The benefits of mouth taping for sleep are mostly anecdotal, since only a few studies have analyzed this trend. Side effects of mouth taping include difficulty breathing, skin irritation, and anxiety. Speak to your doctor since there are no guidelines for safe mouth taping.

Is there scientific evidence that people who breathe with their mouths are less intelligent? No, people who breath through their mouths typically are doing so because of some obstruction or issue with the nasal passages, it is not associated with IQ.