Interesting medical facts
We all strive to learn more about our bodies and can never just pass by another “Did you know…?” Read this article to learn some interesting medical facts you haven’t heard of before or click on part one to find out other interesting medical facts.
Why do we hiccup?
The hyperalimentation, alcohol, anxiety or stress can overexcite phrenic nerves which control a diaphragm. And the diaphragm is consensually reduced. In the same time the glottis, part of a larynx where vocal chords settle down, begins to clench. As a result –convulsions and a strange sound “hic”, repeating each several seconds. Usually, the attack of a hiccup lasts a couple of minutes, but there are cases when it is much longer. Though there is no proved treatment, Raymond suggests making something that will restore phrenic nerves (the same as you reboot your PC when it gets stuck). It is possible to hold, for example, the breath or to inflate a paper package.
Why is yawning so contagious?
Nobody knows the true reason, but in a recent issue of “The Cognitive Research of a Brain” magazine it is suggested that the reciprocal yawning on someone’s yawn is the emphatic reaction similar to laughter. “The yawning can be provoked not only when you see how someone yawns, but even when you hear the sound, when you read or think about it”, – says Stephen Platek, the candidate of medical sciences heading this research. Platek and his colleagues believe that infectivity of a yawning is a primitive way to imitate other people. How’s that for interesting medical facts?
Can cold winter make you sick?
Mass of assumptions, and no right answer. The main theory is that restriction in movement generates an infection. In winter we spend the most part of time indoor, in rooms where air circulates badly and causes risk of respiratory viruses. Both inside and outside air in winter isn’t so wet, therefore it drains nasal passages, making them vulnerable to virus invasion. Though, as Shaffner comments, it isn’t proved that cold weather itself causes colds in winter.
Why do many women have cold arms and feet?
You can blame the blood circulation. “The nerves controlling the blood stream to arms and feet at women are more sensitive, than at men”, – says Mark Eskandari, medical doctor, vascular surgeon in Northwest Memorial hospital in Chicago. “When the temperature falls, female vessels contract stronger, the warm bloodstream is slowed down, extremities of the fine half of mankind get cold. Women’s arterial pressure is lower than men’s. If they are cold or they are nervous, pressure goes down, the blood directs to heart from feet and arms”, – explains Eskandari. Some experts consider that women are capable of holding warm deeply inside, in their heart and uterus, thus, they can preserve the developing fetus, notes James Applegate, the family doctor in the Grandee Rapids, Michigan. But it is only the theory. Continue reading to learn more interesting medical facts.
Why do some people have whiter teeth than others?
Similarly to the color of eyes or hair, a natural shade of teeth is hereditary. “Some people have very white enamel – a thin covering of the tooth surface. And at some it has an obvious yellowish shade”, – says Richard Price, the dentist and the chairman of the American association of dentists in the city of Newton, Massachusetts. Environment factors matter too. Teeth are as tree rings, explains Price. They can tell a lot of things about health and human lives. Taking antibiotics in the childhood (Tetracycline or Amoxicillin) can damage the child’s calcium digestion and therefore change color. Some products can also cause darkening of teeth. “If substance leaves spots on a carpet, then on an adamantine substance of tooth it will leave one too”, – considers Price. Coffee, tea, Coke, red wine are the main “guilty” products. Regular cleaning can help, but old food spots will demand some bleaching products or even procedures. Scroll down to read more Interesting medical facts.
Why do joints crackle?
When you stretch a joint, for example, you press on bones of fingers or you twist a backbone, small vials of air burst between joint saccules. These saccules called synovial bursa help to smooth out the space between bones, acting like greasing for them. The sound can be terrible, but the crunch is usually harmless and has no harmful influence on the synovial bursa. “In spite of the fact that your mummy told you, if you crackle fingers, ankles, knees or any other joint, it doesn’t lead to arthritis”, – explains Applegate. But also it doesn’t make anything good to joints. Any pleasant feeling that people enjoy while crackling fingers remains on the psychological level.
Let us know in the comment section if you already knew about these Interesting medical facts.