Explanations for 12 medical mysteries

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Despite significant advances in medicine, there are still a number of medical conditions that nobody understands and for which there is no scientific explanation.

Although many of these are not in medicine books, they exist, often found as extreme forms of manifestation of the normal functions of the body, which many people experience daily.

For example, although prolonged episodes of hiccups may seem insignificant can make people uncomfortable during the situations they experience.


1. Overview
2. Feeling of cold in the head
3. Earwax
4. Goose bumps
5. Lips become thinner as you age
6. Teens who sleep late
7. Hiccups cause
8. Women have cold hands and feet
9. Joints that crackle
10. Some people have whiter teeth than others
11. Why do people get sick more often in winter?
12. Why is yawning contagious?

Feeling of cold in the head

This is a pain or sensation that occurs when mouth nerves are overstimulated with very cold foods (ice, cold drinks).

Nerves are located in the mouth, but the nerve center is in the brain, so the sensation is felt in the head. This question may arise why people feel pain somewhere, and the stimulus is in another place, but no one knows for sure.

To reduce this feeling, should be to eat slowly the cold foods and to sip the drinks. One of the remedies, when you experience this feeling is to drink a hot beverage.


This is to protect the ear from foreign matter that could penetrate the ear canals. Earwax is produced by glands in the external ear (sebaceous waxy) to protect the inner ear from infection.

Ear sticky substance prevents dust, dirt, insects. This is a self-cleaning process of ear because wax move on its own into the ears, up and down until it dries and leaves the ear, most of the times.

Those who use sticks for ears should know that they help to push the ear wax and during this cleaning action they may injure the ear canal or eardrum.

Goose bumps

This phenomenon occurs when a person is cold or fear. When the feeling of cold occurs, muscles around hair follicles shrink, causing hair raising to create a layer of insulation.

This phenomenon is met in all mammals, but people do not have enough hair for the response to cold body to resolve the situation. Simply it is a vestigial reflex triggered when people had whole body covered with hair.

Goose bumps that resulted from fear is another vestigial reflex. Years ago, when our ancestors had more hair on the body seemed more threatening in this way.

Lips become thinner as you age

As a person gets older, he produces less collagen which is a protein that supports the soft tissues of the body and makes lips look nice.

Sun’s ultraviolet rays can cause decreased amount of collagen and thinning lips. One way to keep lips look full is to protect them from the sun by applying a balm or lipstick with SPF.

Teens who sleep late

The fact that teenagers sleep late at night is not a sign of laziness. In childhood, melatonin, the hormone that regulates the sleep-wake cycle is secreted before the start of the evening, by the pineal gland.

When puberty occurs around the age of 10-14 years, melatonin is released later, around 9 – 10 pm. This change causes problems for many young people: can’t fall asleep earlier than 12 am, often need more than 9 hours of sleep, they hardly wake up in the morning.

Hiccups cause

Overeating, alcohol or stress can stimulate the phrenic nerves that control the diaphragm and then shrink it involuntarily. Meanwhile, the epiglottis (part of the larynx where the vocal cords are located) closes. The result is spasms and strange noise that repeats every few seconds.

Although there is no confirmed treatment, specialists suggest to try an action that calms phrenic nerves like holding your breath or breathing into a paper bag.

Women have cold hands and feet

Nerves that control blood flow to the hands and feet are more sensitive in women than in men. When the temperature drops, the women’s blood vessels shrink even more, the heated blood flow slows and the extremities become colder.

Women also have lower blood pressure than men. When a woman is suffering from cold or stress, the blood pressure lowers and heart blood is redirected away from the hands and feet. Some experts believe that women tend to retain heat in the heart and uterus, so that it can protect the developing fetus, but this is just a theory.

Joints that crackle

When a person stretch his joints (either he crack his fingers or twist his spine) will cause snapping of small bubbles formed between sachets of joints. These sacs, called scholarships, help alleviate friction and the spaces between the bones and keeps them lubricated.

Noise that occurs when joints crackle is usually harmless and has no effect on scholarship. Despite what popular words say, cracking fingers, ankles or knees not cause the appearance of arthritis, but there isn’t any benefit joints.

Some people have whiter teeth than others

Like eye and hair color, natural color of teeth is hereditary. Some people have a very thin layer of white enamel, while others have a yellow shade of the enamel. Environmental factors also play an important role.

Tooth color says a lot about a person’s health and medical history. Treatment with antibiotics (tetracycline or amoxicillin) in a child’s case can trigger the process of calcification, even causing discoloration.

Certain foods can change the color of teeth: coffee, cola, tea or red wine are the most common causes. Brushing teeth frequently helps, but stains resulting from certain foods consumption may require the use of some whitening products or procedures.

Why do people get sick more often in winter?

There are a lot of assumptions, but no correct answer. One theory is that in winter people spend more time indoors in unventilated rooms, offering more opportunities for exposure to respiratory viruses.

Winter cold air from the outside as the inside, tends to be less wet, dry nasal passages and makes them more vulnerable to virus invasion. However, it could not be proven that cold air itself makes people sick in the winter.

Why is yawning contagious?

Nobody knows for sure, but it is assumed that the tendency to yawn after someone yawned could be empathic response, similar to laughter. A yawning can be triggered especially if another person yawn around, but also if a person is talking, listen or read about this phenomenon.

Some experts believe that the act of yawning is contagious because it is a primitive way of modeling our feelings after those of another person.



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