Onions Prevent Influenza?
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Onions Prevent Influenza Infection-Unproven!

Summary of the eRumor:  
This is a forwarded email about onions.   It says that during a 1919 influenza scare farmers would cut onions and place them on plates to  ward off infection.   It also warns about leftover onions and how they can be poisonous to dogs.
 

The Truth:  
There is no medical evidence that onions attracts viruses.  Onions have been mythically thought to ward off diseases since the days of the bubonic plague in the middle ages.   The Vetinfo.com web site does warn that onions are unsafe for dogs and included the tasty vegetable on their list of toxins for dogs.

Left over onions, alone, may not be toxic but can easily pick up contamination from preparation utensils.  
FoodHygieneTraining.com, a website in the United Kingdom offering expert food safety tips, suggests using different cutting boards when preparing meals and vegetables, to prevent cross-contamination.    The web site also warns that bacteria, viruses and parasites can grow in a matter of 20 minutes on a cutting board that was used for uncooked meat if not cleaned properly. It is not difficult for onions and other vegetables to pick up  such microorganism that are invisible to the naked eye.  Natural enzymes in vegetables may even inhibit growth.

If stored improperly, onions can eventually go bad.  The National Onion Association posted suggestions on their web site regarding the storage of unprepared onions recommending that be stored in a cool dry place where air can be allowed to circulate.  Depending on the type, onions can be last in storage between 30 to 180 days.  They also said that "Chopped or sliced onions can be stored in a sealed container in your refrigerator for up to 7 days." 

updated 02/26/10

A real example of the eRumor as it has appeared on the Internet:

The ONION

In 1919 when the flu killed 40 million people there was this Doctor that visited the many farmers to see if he could help them combat the flu.  Many of the farmers and their family had contracted it and many died.

The doctor came upon this one farmer and to his surprise, everyone was very healthy. When the doctor asked what the farmer was doing that was different the wife replied that she had placed an unpeeled onion in a dish in the rooms of the home, (probably only two rooms back then). The doctor couldn't believe it and asked if he could have one of the onions and place it under the microscope. She gave him one and when he did this, he did find the flu virus in the onion. It obviously absorbed the bacteria, therefore, keeping the family healthy.

Now, I heard this story from my hairdresser in AZ. She said that several years ago many of her employees were coming down with the flu and so were many of her customers. The next year she placed several bowls with onions around in her shop. To her surprise, none of her staff got sick. It must work.. (And no, she is not in the onion business.)

The moral of the story is, buy some onions and place them in bowls around your home. If you work at a desk, place one or two in your office or under your desk or even on top somewhere. Try it and see what happens.  We did it last year and we never got the flu. If this helps you and your loved ones from getting sick, all the better. If you do get the flu, it just  might be a mild case.. Whatever, what have you to lose? Just a few bucks on onions!

There is a P.S. to this for I sent it to a friend in Oregon who regularly contributes material to me on health issues. She replied with this most interesting experience about onions:

Weldon, thanks for the reminder. I don't know about the farmers story...but, I do know that I contacted pneumonia and needless to say I was very ill...I came across an article that said to cut both ends off an onion put one end on a fork and then place the forked end into an empty jar...placing the jar next to the sick patient at night. It said the onion would be black in the morning from the germs...sure enough it happened just like that...the onion was a mess and I began to feel better.

I read in the article was that onions and garlic placed around the room saved many from the black plague years ago. They have powerful antibacterial, antiseptic properties.

Another note.

LEFT OVER ONIONS ARE POISONOUS

I have used an onion which has been left in the fridge, and sometimes I don't use a whole one at one time, so save the other half for later.

Now with this info, I have changed my mind....will buy smaller onions in the future.

I had the wonderful privilege of touring Mullins Food Products, Makers of mayonnaise. Mullins is huge, and is owned by 11 brothers and sisters in the Mullins family. My friend, Jeanne, is the CEO.

Questions about food poisoning came up, and I wanted to share what I learned from a chemist.

The guy who gave us our tour is named Ed. He's one of the brothers Ed is a chemistry expert and is involved in developing most of the sauce formula. He's even developed sauce formula for McDonald's.

Keep in mind that Ed is a food chemistry whiz. During the tour, someone asked if we really needed to worry about mayonnaise. People are always worried that mayonnaise will spoil. Ed's answer will surprise you. Ed said that all commercially- made Mayo is completely safe.

"It doesn't even have to be refrigerated. No harm in refrigerating it, but it's not really necessary." He explained that the pH in mayonnaise is set at a point that bacteria could not survive in that environment. He then talked about the quaint essential picnic, with the bowl of potato salad sitting on the table and how everyone blames the mayonnaise when someone gets sick.

Ed says that when food poisoning is reported, the first thing the officials look for is when the 'victim' last ate ONIONS and where those onions came from (in the potato salad?). Ed says it's not the mayonnaise (as long as it's not homemade Mayo) that spoils in the outdoors. It's probably the onions, and if not the onions, it's the POTATOES.

He explained, onions are a huge magnet for bacteria, especially uncooked onions. You should never plan to keep a portion of a sliced onion.. He says it's not even safe if you put it in a zip-lock bag and put it in your refrigerator.

It's already contaminated enough just by being cut open and out for a bit, that it can be a danger to you (and doubly watch out for those onions you put in your hotdogs at the baseball park!)

Ed says if you take the leftover onion and cook it like crazy you'll probably be okay, but if you slice that leftover onion and put on your sandwich, you're asking for trouble. Both the onions and the moist potato in a potato salad, will attract and grow bacteria faster than any commercial mayonnaise will even begin to break down.

So, how's that for news? Take it for what you will. I (the author) am going to be very careful about my onions from now on. For some reason, I see a lot of credibility coming from a chemist and a company that produces millions of pounds of mayonnaise every year.'

Also, dogs should never eat onions. Their stomachs cannot metabolize onions .

Please remember it is dangerous to cut onions and try to use it to cook the next day ,it becomes highly poisonous for even a single night and creates Toxic bacteria which may cause Adverse Stomach infections because of excess Bile secretions and even Food poisoning.

Please pass it on to all you love and care.

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