The flu, also called influenza, is a viral respiratory illness.
A virus is a microscopic infectious agent that invades the cells
of your body and makes you sick. The flu is often confused with
another virus, the common cold, because of the similarity in
symptoms, which can include a cough, sore throat, and stuffy
nose. However, flu symptoms also include fever, cold sweats,
aches throughout the body, headache, exhaustion, and even some
gastro-intestinal symptoms, such as vomiting and diarrhea.
Part of flu potency is
from the virus changing so quickly that the body is rarely
prepared for the next season’s strain. “The antibodies we have
built up no longer recognize the virus, so we lose our immunity.
During the last five years researchers have come up with a way
to stem the tide of infection and it revolves around the ways
that sneezes linger in the air. Cold air can carry less water
vapor before it reaches the dew point and falls as rain. While
the weather outside may seem wetter, the air itself is drier as
it loses the moisture. A stream of new research has shown that
these dry conditions seem to offer the perfect environment for
the flu virus to flourish.
Lab experiments have looked at the way flu spreads among groups
of guinea pigs. In moister air, the epidemic struggles to build
momentum, whereas in drier conditions it spreads quickly.
Comparing 30 years’ worth of climate records with health
records, Jeffrey Shaman at Columbia University and colleagues
found that flu epidemics almost always followed a drop in air
humidity.
When we sneeze we expel a mist of particles from our nose and
mouths. In moist air, these particles may remain relatively
large, and drop to the floor, but in dry air, they break up into
smaller pieces, eventually becoming so small that they can stay
aloft for many hours. The result is that in winter, you are
breathing a cocktail of dead cells, mucus, and viruses from
almost anyone who has sneezed in the area.
Showing posts with label Common Cold. Show all posts
Showing posts with label Common Cold. Show all posts
Feb 14, 2020
Feb 24, 2017
Zinc and Colds
It is one of the few ingredients linked
to shortening a cold. Unlike Vitamin C, which studies have found
likely does nothing to prevent or treat the common cold, zinc
may actually be worth it. The mineral seems to interfere with
the replication of rhinoviruses, the bugs that cause the common
cold.
In a 2011 review of studies of people who recently became ill, researchers looked at those who started taking zinc and compared them with those who just took a placebo. The ones on the zinc had shorter colds and less severe symptoms.
In a 2011 review of studies of people who recently became ill, researchers looked at those who started taking zinc and compared them with those who just took a placebo. The ones on the zinc had shorter colds and less severe symptoms.
Oct 11, 2013
Vitamin C Myth Lingers
As we approach the cold and flu
season, I thought it might be interesting to follow up on the
persistent vitamin C myth of using it as a prevention and cure for
the common cold. Some people have also claimed it to be a cure for
cancer.
Hundreds of studies have now concluded that vitamin C does not treat the common cold. The results of many studies of various types, involving hundreds of thousands of people from around the world have all arrived at the same conclusion - vitamin C has no effect to prevent or cure colds or cancer.
The FDA, the American Academy of Pediatrics, the American Medical Association, the American Dietetic Association, the Center for Human Nutrition at the Johns Hopkins Bloomberg School of Public Health, and the Department of Health and Human Services do not recommend supplemental vitamin C for the prevention or treatment of colds. Vitamin C does have other benefits and the studies did not say vitamin C is bad for you, it just does not provide the cancer and common cold remedies claimed.
Hundreds of studies have now concluded that vitamin C does not treat the common cold. The results of many studies of various types, involving hundreds of thousands of people from around the world have all arrived at the same conclusion - vitamin C has no effect to prevent or cure colds or cancer.
The FDA, the American Academy of Pediatrics, the American Medical Association, the American Dietetic Association, the Center for Human Nutrition at the Johns Hopkins Bloomberg School of Public Health, and the Department of Health and Human Services do not recommend supplemental vitamin C for the prevention or treatment of colds. Vitamin C does have other benefits and the studies did not say vitamin C is bad for you, it just does not provide the cancer and common cold remedies claimed.
Oct 9, 2012
Flu Season
It is that time of year again when the flu
bugs invade and many people get the flu or a cold. Most viruses last
a week or less, while others last for weeks. There is no cure, due
to the many varieties of viruses.
The name “common cold” came into use in the 1500s, because its symptoms seemed to appear in cold weather. Of course, we now know that a common cold is not limited to cold weather. It seems more prevalent, because people spend more time indoors in close proximity to each other and sharing the virus.
Good news, kissing reduces levels of the stress hormone cortisol, thereby lowering blood pressure and optimizing immune response. Also, kissing a person with a cold will not cause you to catch it. The quantity of virus on the lips and mouth are miniscule.
Zinc, echinacea, vitamin C, garlic, eucalyptus, honey, lemon, menthol, steam, hot toddies, alcohol, Zicam, chicken soup, and many other “cures” have been repeatedly tested and have been scientifically proven to not prevent or shorten the duration of a cold. At best they provide some physical relief.
Flu shots are designed to prevent the most common types of virus. Most are effective for only those types.
Antibiotics do not cure a cold as they work on bacteria and most colds are caused by virus. However, if it is bacterial, such as half of pneumonia strains, it does help. Bacterial pneumonia usually comes on suddenly and viral types take some time to develop.
The name “common cold” came into use in the 1500s, because its symptoms seemed to appear in cold weather. Of course, we now know that a common cold is not limited to cold weather. It seems more prevalent, because people spend more time indoors in close proximity to each other and sharing the virus.
Good news, kissing reduces levels of the stress hormone cortisol, thereby lowering blood pressure and optimizing immune response. Also, kissing a person with a cold will not cause you to catch it. The quantity of virus on the lips and mouth are miniscule.
Zinc, echinacea, vitamin C, garlic, eucalyptus, honey, lemon, menthol, steam, hot toddies, alcohol, Zicam, chicken soup, and many other “cures” have been repeatedly tested and have been scientifically proven to not prevent or shorten the duration of a cold. At best they provide some physical relief.
Flu shots are designed to prevent the most common types of virus. Most are effective for only those types.
Antibiotics do not cure a cold as they work on bacteria and most colds are caused by virus. However, if it is bacterial, such as half of pneumonia strains, it does help. Bacterial pneumonia usually comes on suddenly and viral types take some time to develop.
Oct 7, 2011
Vitamin C Facts
It has been talked about as a cure-all for everything from preventing colds and AIDS to curing cancer. The death of its biggest proponent and Nobel prize winner in Chemistry (not medicine), Linus Pauling died of cancer. Reminds me of the eye doctor on TV pushing his weight loss pills.
Vitamin C, ascorbic acid, does slow down and prevent some cell damage. It really does prevent scurvy and anemia. It is essential for the repair of bones and teeth. It helps to produce collagen and cells are held together by collagen. Collagen is found in your skin, bones, ligaments, tendons, liver, cartilage, bone marrow and blood vessels.
Occurrence of cataracts, hay fever, and asthma can be reduced, to some extent, with daily doses of the vitamin and its role in reducing common cold is known, but sometimes debated about dosage required. The body eliminates vitamin C rapidly, so it is better to take a lesser amount more often to keep it in your body.
it is not usually mentioned, but meat and potatoes both contain vitamin C. It is a preservative that can be used in jams and pickles. Kiwi has almost twice as much vitamin C as an orange.
Too much Vitamin C can cause kidney stones and also cause diarrhea.
Vitamin C, ascorbic acid, does slow down and prevent some cell damage. It really does prevent scurvy and anemia. It is essential for the repair of bones and teeth. It helps to produce collagen and cells are held together by collagen. Collagen is found in your skin, bones, ligaments, tendons, liver, cartilage, bone marrow and blood vessels.
Occurrence of cataracts, hay fever, and asthma can be reduced, to some extent, with daily doses of the vitamin and its role in reducing common cold is known, but sometimes debated about dosage required. The body eliminates vitamin C rapidly, so it is better to take a lesser amount more often to keep it in your body.
it is not usually mentioned, but meat and potatoes both contain vitamin C. It is a preservative that can be used in jams and pickles. Kiwi has almost twice as much vitamin C as an orange.
Too much Vitamin C can cause kidney stones and also cause diarrhea.
Jul 16, 2010
Common Cold
I 'caught a cold' a few weeks back, (actually it turned out to be pneumonia, contracted from a visit to the doctor and it is gone now). Anyway, it started me thinking about where the name 'common cold' came from.
The name "common cold" came into use in the 1500s, because its symptoms seemed to appear in cold weather. Of course, we now know that a common cold is not limited to cold weather. It seems more prevalent, because people spend more time indoors in close proximity to each other, sharing the virus.
It is difficult to catch a cold by eating something infected with cold virus. The secretions of the mouth tend to kill the virus and any that survive end up in the stomach where gastric juices quickly destroy them. Also, kissing a person with a cold will not cause you to catch it. The quantity of virus on the lips and mouth are miniscule.
There is no cure, due to the hundreds of varieties of viruses, but many medicines can mask the symptoms until it runs its course, usually a week or less. People are most infectious during the first 24 hours, even if the symptoms have not begun to show.
Zinc, echinacea, vitamin C, garlic, eucalyptus, honey, lemon, menthol, steam, hot toddies, alcohol, Zicam, chicken soup, and many other "cures" have been repeatedly tested and have been scientifically proven to not prevent or shorten the duration of a cold. At best they provide some physical relief. People believe these are effective because of the varied nature of colds. Some viruses only last a few days, while others last for weeks.
Flu shots are designed to prevent the most common type of virus and are effective for only that type. Antibiotics do not cure a cold as they work on bacteria and most colds are caused by virus. However, if it is bacterial, such as half of pneumonia strains, it does help. Bacterial pneumonia usually comes on suddenly and viral types take some time to develop.
Imagine a person with a four-day form of cold. If he does nothing he will be well in four days, but he immediately drinks a gallon of orange juice. A couple of days later he feels great and tells everyone that the vitamin C in the juice killed his cold. His story quickly spreads and everyone starts drinking orange juice. The vitamin C didn't cure it.
On the other hand, people who try a cure and find that it doesn't work aren't as likely to report it, because most folks do not brag about failures. Human nature and the variability of the cold virus create a situation where beliefs in cold cures persist in spite of overwhelming scientific evidence to the contrary.
The name "common cold" came into use in the 1500s, because its symptoms seemed to appear in cold weather. Of course, we now know that a common cold is not limited to cold weather. It seems more prevalent, because people spend more time indoors in close proximity to each other, sharing the virus.
It is difficult to catch a cold by eating something infected with cold virus. The secretions of the mouth tend to kill the virus and any that survive end up in the stomach where gastric juices quickly destroy them. Also, kissing a person with a cold will not cause you to catch it. The quantity of virus on the lips and mouth are miniscule.
There is no cure, due to the hundreds of varieties of viruses, but many medicines can mask the symptoms until it runs its course, usually a week or less. People are most infectious during the first 24 hours, even if the symptoms have not begun to show.
Zinc, echinacea, vitamin C, garlic, eucalyptus, honey, lemon, menthol, steam, hot toddies, alcohol, Zicam, chicken soup, and many other "cures" have been repeatedly tested and have been scientifically proven to not prevent or shorten the duration of a cold. At best they provide some physical relief. People believe these are effective because of the varied nature of colds. Some viruses only last a few days, while others last for weeks.
Flu shots are designed to prevent the most common type of virus and are effective for only that type. Antibiotics do not cure a cold as they work on bacteria and most colds are caused by virus. However, if it is bacterial, such as half of pneumonia strains, it does help. Bacterial pneumonia usually comes on suddenly and viral types take some time to develop.
Imagine a person with a four-day form of cold. If he does nothing he will be well in four days, but he immediately drinks a gallon of orange juice. A couple of days later he feels great and tells everyone that the vitamin C in the juice killed his cold. His story quickly spreads and everyone starts drinking orange juice. The vitamin C didn't cure it.
On the other hand, people who try a cure and find that it doesn't work aren't as likely to report it, because most folks do not brag about failures. Human nature and the variability of the cold virus create a situation where beliefs in cold cures persist in spite of overwhelming scientific evidence to the contrary.
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