Author Archives: pnijjer

Carcinogenic Ingredient Found in Coca-Cola and Pepsi

Image by Jason Means

The Center for Science in the Public Interest (CSPI) recently contacted Food and Drug Administration (FDA) to ban 4-methylmidazole (4-MEI) found in soft drinks which is a carcinogenic ingredient. Coca-Cola and Pepsi use 4-MEI to give their product it’s distinct caramel color everyone knows. 4-MEI is formed when sugar is mixed with ammonia and sulfite to be used as a colouring substance. It can also be found in dark beers and other brands of cola drinks, which contain more than 100 ug per 12-ounce serving of 4-MEI.

Companies using this compound would have to change their formula or print cancer-warning labels on their products. Even though companies challenged CSPI’s decision, they decided to change their recipes to avoid having cancer warnings on all of their products. The organization wants the ban of this compound everywhere not just in the U.S.

A Coca-cola representative responded to CSPI, saying their data is inclusive and stated

“While we believe that there is no public health risk that justifies any such change, we did ask our caramel suppliers to take this step so that our products would not be subject to the requirement of a scientifically unfounded warning,”

FDA has yet to make a ruling on this issue.  I tried looking for any studies linking 4-MEI to cancer in humans but came up empty. Only came across one study that found high doses of 4-MEI to cause lung and liver cancer to rodents. You would need to drink more than 1,000 cans a day to reach lethal doses that have shown links to cancer in rodents

The change of 4-MEI is only be rolled out through out the U.S because of the new mandate.  In the case of Canada, the change will come but there is no timeline yet. In Canada Cola products meet food safety standards and is not a concern. They have approved the use of 4-MEI in their products.

Following video below briefly explains the issue on hand.

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Personally, I don’t think this will stop me from drinking Coca-Cola. CSPI is just over-reacting and there is no need to slap a cancer warning labels on products containing 4-MEI. There is not enough evidence supporting 4-MEI causing cancer in humans; even then you will need to drink cola in high doses. One thing that comes to my mind is if they were to put a cancer-warning label on the drinks, would it impact sales? Cigarette cartons have similar warning signs but that doesn’t stop consumers from purchasing them. If a product tastes good, people over look the side effects.

What do you think? Would you stop drinking soft drinks with 4-MEI?

 

 

How The Zebra Got it’s Stripes

 

Zebra (Photo by Andy Lederer )

Zebras, who are well known for their black and white stripes, are native to Africa and live in various habitats, such as grassland areas and woodlands. They graze together and travel in herds to protect themselves from predators.

Ever wonder how the zebra got its distinct black and white stripes? Until now it has been a mystery, but zoologists have finally figured it out. Adam Egri from Eötvös University in Budapest, Hungary, believes that zebras evolved stripes to protect themselves from blood-sucking horseflies known as tabinids that carry dangerous germs. He found that horseflies attract less to black and white stripes than all-white or all-black skin. The findings were reported in the journal of experimental biology.

A tabanus also known as a horsefly (Photo by Dennis Ray)

How does this work? According to Egri, horseflies are attracted to polarized light to find water where they can find a mate and lay eggs. Horse models painted with black and white stripes of varying widths and angles revealed that narrower stripes attract the fewest horseflies. When comparing all-white, all-black, and black and white striped horse models, striped horses attracted the least amount of horseflies. The zebra stripes disrupt the polarized light, making them unattractive to the horseflies. Also, the attractiveness to horseflies decreased as the stripe width decreased.

Prior to this study, there have been several hypotheses on why the zebra has black and white stripes. It is thought the stripes help the zebra camouflage within herds making it difficult for predators to distinguish a single zebra but there is no evidence supporting this. The lion, zebra’s main predator, is colour-blind which could be difficult for the lion to distinguish black and white stripes among a herd. Also, each zebra has its distinct black and white stripes that could provide visual cues for other zebra to recognize each other.

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I wonder if this study could be applied to other animals with stripes such as tiger with black and orange stripes. One question that remains to be answered is whether a zebra is white with black stripes or black with white stripes?

NHL and Concussions – What can be done?

Brad Marchand illegal hit on Sami Salo (Photo by Brian Babineau/NHLI via Getty Images)

The first half of the National Hockey League (NHL) season has been riddled with concussions. Players are being increasingly concussed from legal/illegal hits to the body and head.  Just recently, Nathan Horton of the Boston Bruins suffered a concussion, making him the 72nd player this season to suffer one. Based on an average roster size of twenty-three NHL players per team, one in every ten players have already missed games. More than 850 games have been lost as of Sunday due to a concussion.

You may ask why the sudden increase in concussions? Before the lock-out period (2004-2005), concussions were rarely diagnosed and have just recently come to the attention of the league. Players were never examined for concussion symptoms. The increase in concussions also has a lot to do with how the game is played today. In the new era of the NHL, players are bigger and stronger, and wear lighter equipment allowing for a faster paced game.  Thus, the games are getting quicker and quicker every year.  The velocity at which players hit each other is higher and there are far to many blindside hits and elbows to the head. All of these things are contributing to the rise of concussion related injuries.

What is a Concussion?

Concussion (mild traumatic brain injury) is a brain injury sustained by a blow to the head resulting in traumatic forces being applied to the brain. Upon impact the brain moves violently, suffering structural and internal damage.

Common Symptoms:

  • Headache
  • Disoriented
  • Vomiting, Nausea
  • Difficult Balancing
  • Blurred/Double Vision

        Animation of an impact to the head.  YouTube Preview Image

Each athlete has a different threshold for their susceptibility to concussions. Usually concussion symptoms go away without any treatment. The key to preventing concussion symptoms is to be fully recovered before you hit the ice again. The second time around will be worse and will result in a longer recovery period.

What can be done to prevent concussions?

NHL has recently taken precautionary measurements by introducing a new concussion protocol, making it mandatory for players to be medically examined if they suffer an impact to the head. A concussed player will be immediately removed from the game until they are symptom free.  Handing out hefty suspensions to illegal hits to the head are steps in the right direction to discourage hits to the head, but more still needs to be done. The league needs to change the equipment they are using. Helmets alone are not sufficient enough to protect players from concussions. Elbow and shoulder pads should be softened to reduce their effect on players. Also the league should introduce new equipment such as the concussion collar by Dr. Joseph Fisher which could reduce the severity of a hits to the head.

A concussion collar worn by Henrik Tallinder that could help prevent concussions (Photo by Bill Wipper/NHLI via Getty Images)

All of the above safety measures could set the players and the league on a safer course. I feel players are largely responsible for their actions, they need to be more aware of their surroundings. They have less respect for their own safety thinking they are bullet proof.

 

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