Category Archives: Science in News

“Gluten-Free” – Is it as Healthy as We Think?

I’m guessing that the majority of you have seen the increasingly popular “gluten-free” diet trend displayed in many health-related magazines, books or even talk shows. But why is everybody so obsessed with this new diet fad? Well, apparently, it’s supposed to be one of the healthiest changes that you can make to your lifestyle. One scientific study even suggests that a gluten-free diet can reduce the level of “bad” fats in your blood that lead to heart disease, but is gluten-free really as healthy as it’s claimed to be?

Gluten-Free Bread; photo courtesy of Pixabay user Aline Ponce

Being “gluten-free” first arose as a treatment for individuals with celiac disease, a disorder that causes damage to the small intestine from ingesting gluten. Celiacs experience many symptoms, ranging from severe gastrointestinal issues to even developing anemia and behavioural changes. Unfortunately, the only real way to combat this is through the complete elimination of gluten from one’s diet.

Gluten is a protein found in wheat, barley, and rye. As awareness of celiac disease has increased, so have gluten-free alternatives to popular foods. As a response, many non-celiacs have been transitioning to this diet as well, assuming that it is a healthier lifestyle. However, relatively new evidence suggests that being “gluten-free” isn’t as beneficial to your health as you may believe.

Dr. Travis speaks about the gluten-free diet industry.

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In Digestive Diseases and Sciences, a study observed the risk of metabolic and cardiovascular disease among non-celiac individuals following a gluten-free diet. The study concluded that there was an association between being gluten-free and weight management, but this is likely because gluten-free individuals do not consume refined wheat products, which are harmful to your health. Interestingly, there was no difference in the risk of metabolic disease or heart disease between gluten-free and non-gluten-free individuals.

Additionally, the Mayo Clinic suggests that those who are adopting a gluten-free diet should be wary of losing some essential vitamins and nutrients, like iron, calcium, and fiber. Whole grains are usually enriched in these, so you would have to be diligent in finding them in other sources.

Gluten-Free Mix; photo courtesy of Flickr user, ‘theimpulsivebuy’

Gluten-free individuals should also be mindful of the fact that many store-bought, gluten-free foods are no better for you than the versions made with gluten. This is because many of these foods actually contain more sugar, fat, and calories than the original versions, leading to weight-gain rather than weight-loss. It is a common misconception that just because something is “gluten-free,” it is also healthier.

Overall, the stance on whether or not a gluten-free diet is beneficial to non-celiacs is very controversial. As long as one is aware of what is actually inside the gluten-free foods that they are consuming, as well as of all the daily nutrients that they should be obtaining, then this diet is potentially beneficial. Although, it may not be worth it if whole grains, in moderation, have shown no detrimental effect on health. The most important thing for non-celiacs to remember is that a “gluten-free” label does not automatically equal “healthy.”

By Silvana Jakupovic

Save the plastic = Save the life


This video is from National Geographic “How the global ocean plastic pollution problem has become ubiquitous”.

Recently, a catastrophic news “Plastic Garbage Patch Bigger Than Mexico Found in Pacific” published last year has caught public attention. It reported a new finding of a huge region of plastic pollution in South Pacific (near the coastal region of Chile and Peru).

The plastic pollution in the ocean not only means floating bottles or buoys which can be easily discovered but also includes the small pieces of plastic debris which may be invisible. So the ocean cleanup is very difficult. Based on the historical data in 2012, the mean abundance of plastic pollution in South Pacific was roughly 71 kg/km2. What a shocking number it is! The extreme increase of the plastic pollution in South Pacific over the last six years has threatened many marine species and seabirds.

The plastic garbage “patch” includes both big piece (macro-plastics) and very small piece (micro-plastics). In a short-term effect, those seabirds and marine species who accidentally ingested or consumed plastics will stick in their tissues forever (just like the image below). The previous research has shown that mussels ingested micro-plastics through gills would transport to the stomach and digestive glands. In biology classes, we learned that toxins will be accumulated through the food chain and magnified in carnivorous species. As a result, more species will be harmed. Eventually, the whole ecosystem may be negatively impacted.

Plastic debris was found in seabird’s stomach; Photo courtesy by Chris Jordan

Right now, the first aid is to clean up the plastic waste in the ocean. This is because the residence time of plastics in the ocean is very long. Also, its degradation time under UV light and water is still uncertain. After breaking into small pieces, micro-plastics will further sink down to the ocean and release toxic chemicals. Although it is a difficult work to clean up all the plastics in the ocean, we still need to try our best to solve the existing garbage. Thus we can prevent further contamination of the marine environment.

Moreover, it is important to increase public awareness of the garbage dumping near coasts. Since most of the containments are anthropogenic, if the general public can get better understandings of the harmfulness of certain behavior, the marine ecosystem will be more sustainable.

In the future studies, scientists should focus more on the problem solving of the ocean plastic pollution, especially appropriate garbage disposal and recycling. Also, an alternative material to plastics that is nontoxic and easily degraded is encouraged to be investigated.

By Jenny Tang

Here’s Why Coffee Is Good for Your Health

We all love our morning coffee. Photo courtesy of blogTO

Coffee has existed since approximately the 15th century – and over these years it has amassed a lot of confusion about its effect on your health.  The media has played a role in pushing a negative view towards the effects of coffee. Us coffee lovers have always had a family member or friend comment with an expression of concern regarding our love for coffee.  It’s about time coffee drinkers put an end to this narrative!

Well, if you are a huge coffee lover, you will be happy to know that scientists have discovered that there is no connection between coffee and an increased risk of cancer or heart disease. In fact, the Universities of Southampton and Edinburgh published a meta-analysis investigating the effects of coffee on health. Amazingly enough, the paper used an extensive sample size analyzing over 200 papers! They found that drinking three to four cups of coffee a day may actually improve your health. Furthermore, they concluded that those who drank coffee were 17% less likely to die an early death, 19% less likely to die of heart disease and 18% less likely to develop cancer, compared to people who did not drink coffee.

Courtesy of Harvard School of Public Health

How does coffee work? The active ingredient in coffee is caffeine. Caffeine stimulates your brain and increases your alertness. Coffee also contains a lot of antioxidants, which are molecules that prevent damage that can cause cancer. Reactive molecules called “free radicals” attack our body and damage cells. Antioxidants stabilizes the oxidants, thus stopping them from harming our body!

David Heber, director of Center of Human Nutrition, UCLA discusses the effects of coffee.

Okay, now we know coffee can be healthy, but we also know that too much of anything is bad. How much coffee is too much coffee? Health Canada recommends adults limit caffeine intake to no more than 400mg/day. This is approximately three 8-ounce cups of coffee. Surpassing these limits could result in increased heart rate, changes in sleep patterns, heartburn, and more.

Remember that it in order to maximize coffee’s health benefits, minimize the amount of cream and sugar you put in your coffee. Sugar can singlehandedly nullify the positive effects you would get from coffee.

Robert Poole, the lead author of this study, says that these findings are “reassuring for coffee drinkers, as long as they drink in moderation”. Future studies will ideally pinpoint which type of coffee beans will have the greatest health benefit.

By Misam Ibrahimi

Video

Is Chocolate Really Good for your Health?

Ever have that craving for a hit of sugar or the pick-me-up that chocolate delivers? Justify your guilty pleasure by agreeing with the notion that chocolate is good for you? If you answered yes to the any of the above questions, you have just admitted to being a victim of the media’s portrayal of scientific findings.

Chocolate Bars
Published under the Creative Commons License; photo courtesy of Wikimedia user André Karwath.

In recent years, many scientific studies claimed to have proven that chocolate is the next best thing you can eat. Studies conducted by researchers at prestigious universities such as Columbia have targeted and provided evidence for how chocolate helps to reduce memory loss, on a small number of subjects in a very controlled environment. This research finding was published in the media and ballooned by the press, even though it failed to mention that the study was minuscule and that it did not even use chocolate, but rather chocolate flavouring. In addition, when the New York Times, a seemingly credible and well-read media outlet got whiff of the research, they promoted only the positive aspect of how chocolate improves memory, but did not describe the size of the study or the subjects involved. This lack of knowledge reduces the credibility of the article, but nevertheless is believed by readers. The media has a strong impact on what the everyday person believes, and exaggerating scientific findings can be dangerous.

Blood Pressure Monitor
Published under the Creative Commons License; photo courtesy of Wikimedia user Amirhossein Ashrafzadeh.

Furthermore, other studies conducted on the health benefits of chocolate have made the claims that chocolate promotes lower blood pressure, which ultimately reduce the cases of cardiovascular disease. Once again, the media has taken these findings and brainwashed hoards of people suffering from high blood pressure to run to their local supermarkets and load up on the kit-kat. What the media did not mention was the fact that while cocoa has been shown to reduce blood pressure, the research conducted was only on a short time scale; the long-term effects are unknown. Moreover, when chocolate is made, the cocoa is severely degraded as it gets mixed in with sugars and other additives, so the results of the study may not hold true in store bought chocolate products. Again, the media chose not to disclose this to its audience and we are left believing that chocolate will cure high blood pressure. Without all the information, it is scary to think that we let ourselves fall into the “whatever is in the news must be true,” epidemic.

The video below exposes an unbiased view on the benefits, or lack thereof of chocolate.

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Video From: https://www.youtube.com/watch?v=JtaUKweEVhY

The case study on chocolate just presents one instance of when the media has taken up studies and hyped up their findings, regardless of their validity, fooling the nation into believing myths. So the next question is, what will the news have us believe tomorrow?

By: Wesley Louie