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Why We Catch A Cold

Jul 12, 2016 By Lori Martinez Leave a Comment

Girl blowing into the snow risking to catch a cold.

Wear warm clothes or you will catch a cold.

Doctors have finally found the scientific and medical explanation regarding the reasons we catch a common cold. This way they established what we could do to avoid getting sick and the solution is quite simple because all we need to do is to cover our faces when it’s cold outside.

According to Akiko Iwasaki, lead author of the study and Immunobiology Professor at Yale School of Medicine, the data gathered from the research showed that there is a close connection between common cold and chilly weather conditions.

The most significant finding was that our immune system had a different response to the virus when we had to deal with freezing temperatures.

The rhinovirus is responsible for the common cold because once it enters inside the nose, it starts to replicate. Iwasaki explained that the airway inside the nose is cooled when we inhale the cool air from outside.

This airway becomes the ideal environment for the virus to replicate. Cooler temperatures prevent our immune system from producing molecules that usually block the virus from spreading into our body. Worse, the infected cells do not die, so they become much like a host for the virus to better replicate.

All of this is possible due to cooler temperatures that affect the efficiency of our immune system response to the rhinovirus. In other words, the virus will continue replicating until we catch a common cold. Besides covering our noses when we go outside, Iwasaki underlined the importance of washing our hands.

When we wash our hands, we get rid of many types of bacteria, so we can prevent many infections, even Hepatitis A. Another significant countermeasure would be to keep our bodies and the nasal cavity warm to make sure that our immune system can respond to the rhinovirus.

Limiting our exposure to the cold is a good option if we want to avoid catching a common cold. But not winter is our worst enemy, but the transition period between summer and fall, when the temperatures become cooler.

Also, when people spend too much time in crowded environments, they have a higher risk of getting contaminated with the rhinovirus and catch a common cold. It is important to have a healthy diet as well if we want the body to be able to respond to any virus or bacteria.

Image Source:Pixabay

Filed Under: Health Tagged With: catch a cold, cold, common cold, common cold and low temperatures, common cold and the nose, low temperatures and common cold, Why We Catch A Cold

Tattoos Could Crank Up our Body’s Immune Response

Mar 13, 2016 By Benjamin Teh Leave a Comment

"Tattoos Could Crank Up our Body’s Immune Response"

A new study suggest that people with multiple tattoos are better protected against infections.

A new study performed at the University of Alabama suggest that people who get inked more frequently have a stronger immune system. Compared to those who got their first tattoo or to those who do not own a tattoo, the possessors of multiple tats may be more resilient to the common cold.

A team of researchers from the University of Alabama managed to show that tattoos are not only cool, but they can help us keep the recurrent diseases at bay. Moreover, those who had the courage to get multiple tattoos are more protected against the flu or the common cold than people without tattoos or those who have only one tattoo.

The team of researchers said that every time someone gets a tattoo, the body gets tricked into coming up with an appropriate immune response. This means that the more tattoos you have, the better your immune system will respond towards pathogens found in the atmosphere.

Doctor Christopher Lynn, the lead scientist of the study, the trick lies in safety. Getting your first tattoo can, in fact, crank down your body’s immunological response. Moreover, the scientist argued that after the first ink session, the body’s left susceptible to infection and swelling.

But the more tattoos you get, the more resilient your body will be against roaming infection. As the scientist explained, after experiencing the first symptoms of inking, the body tries to reach an equilibrium.

This immunity-related equilibrium can be offset again when you decide to have a second tattoo. As this process happens, your body tries to figure out an appropriate counter-measure and boosts up the immune response.

Theoretically speaking, the more tats you get, the better you’ll be shielded from the common cold and other seasonal illnesses.

Well, this all sounds good on paper, how about in real life? To test out their assumptions, the team of scientists asked the help of 29 volunteers. All of the subjects had tattoos, and 9 of them had their first tattoo quite recently.

The test included taking saliva samples and assessing the levels of immunoglobulin A and cortisol. Immunoglobulin A is your garden-variety antibody that resides in your gastrointestinal track and you airways and cortisol is a hormone that controls the levels of stress.

For some time now, the scientists have observed that cortisol can suppress the immune response our body produces too much. After testing each saliva sample, the researchers found out that the first-timers had a decreased level of immunoglobulin A in comparison with those with multiple tattoos, who had a slighter higher level.

This means that those with multiple tattoos have a stronger immune system than those who just got their first tattoo.

Of course, the study is far from reflecting the truth, according to some of its critics. Doctor Sylvie Stacy, a physician, declared that the study had a small sample size to start with, and the results cannot be generalized to encompass a larger segment of the population.

As a medical professional, Doctor Stacy doesn’t recommend tattoos for the sake of immunity, cautioning all her patients who are thinking of getting one. The clinician also added that those who have a tattoo are susceptible to infection, possible scarring and psychologic effects.

Photo credits:pixabay

Filed Under: Health Tagged With: common cold, immune response, immune system, infections, swelling, tattoos

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