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How to choose the best butter or margarine product for you

“Help, too many choices!” – This could quite likely be the thought going through your head while standing in front of the butter and margarine section of the grocery store. It seems through the years that an increasing number of brands and products have appeared on the shelves. So, how do you begin to make a well informed decision of which to buy? It may initially take some time to look at the labels, but you are likely to continue to buy this product as a household staple for years to come. Here are some things to consider when deciding upon which butter or margarine product to choose.

 

Margarine – The major issue with margarine is the presence of trans fats. Health Canada notes that trans fats raise levels of LDL-cholesterol while lowering levels of HDL-cholesterol in the blood. This is not a good thing as LDL-cholesterol increases the risk of heart disease, while HDL-cholesterol helps to prevent heart disease. Dr. Kristie Leong explains that, in general, the more the liquid the margarine the less trans fat the margarine contains. Be sure to read the Nutrition Facts on the label as well as the ingredients list. Sometimes the label will say that there is 0 grams of trans fats, even though some is present in the product. Keep an eye out for hydrogenated and fractionated oils on the ingredients list to indicate the presence of trans fats.

Butter – The major issue with butter is the high content of saturated fats. According to Health Canada, saturated fats increase levels of both LDL-cholesterol and HDL-cholesterol in the blood; thus, saturated fats have both positive and negative effects. Consumption of saturated fats have previously been thought to increase the risk of coronary heart disease, cardiovascular disease, and stroke. However, a study by Siri-Tarino et al. (2010) suggests that there is no link between saturated fats and heart disease. Nevertheless, to be on the safe side try to consume butters with lower amounts of saturated fats.  On a positive note, butter is less processed than margarine, and, as Dr. Kristie Leong explains, butter is a source of other beneficial nutrients, of which margarine is not.

Overall, try to limit the amount of butter and/or margarine you consume on a daily basis. Eating it in similar quantities as the people in the video shown below is not advised.  I would opt for a butter that is low in saturated fat. If you prefer margarine, then choose one that does not contain trans fat. But, in the end, the product you buy is up to you!

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References:

Siri-Tarino, Patty W, Sun, Qi, Hu, Frank B, and Krauss, Ronald M. (2010). “Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease.” The American Journal of Clinical Nutrition 91(3): 535-546.

Submitted by: Angela Johnston

Scientific Advances in Treatments for Deafness

Behind the Ear Hearing Aid
http://www.hearing-aids-wizard.com/image-files/behind-the-ear-hearing-aid-decorated.jpg

One important characteristic of being human is our complexly developed senses; our senses are what place us at the top of the food chain. However, one in twenty five people in Canada are unable to experience one of the most fundamental senses for survival: hearing. Scientists have aimed to develop technology to improve the quality of life for those who are hearing impaired. There are already methods that are successful in improving hearing: the hearing aid and the cochlear implant. Furthermore, recent research  suggests that embryonic stem cells could also be of great help when treating the hearing impaired.

The hearing aid is the most common type of treatment that doctors recommend for hearing loss. It is an electronic device consisting of a battery and some form of a miniature loudspeaker that amplifies sounds that the user is unable to detect. Moreover, the device is customized to the ear shape of the user and fits comfortably inside the ear. An advantage of the hearing aid is that it is cost effective; no matter the financial state of the patient, it is possible to find an affordable device. A second advantage to the hearing aid is that it comes in different styles so finding the right one depends solely on the user’s preference. Its many advantages have widely popularized the use of it for people who are hearing impaired.

The Inner Ear http://drharris.ucsd.edu/Portals/0/inner%20ear%20detail.jpg

Another method of improving hearing is the surgical implantation of an artificial cochlea, also known as the bionic ear. The cochlea implant functions through skipping the component of the patient’s inner ear where the fully functional hair cells  used to be, and stimulating the cochlear nerves directly using electrical impulses sent by the implant.  This would allow the brain to be able to receive nerve impulses the same way hair cells would send nerve impulses.  The downside of the cochlear implant include risk of infection from the surgical procedure, and the high cost of the implant itself.

The last method that will be discussed was found recently by the University of Sheffield in England and involves an area of science that has been on the rise for the past twenty years: stem cell research.  This new discovery suggests embryonic stem cells can be modified such that it mimics the function of a hair cell, thus, allowing the ear to hear normally. Further research must be done to implement this method but researchers at the University believe this method, when paired with the cochlear implant, possesses the ability to treat people with  hearing impairment.

To demonstrate how life changing advances in science can be, here is a short video of a girl hearing herself for the first time after a cochlear implant.

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The methods described are only a few ways science has advanced to treat those who are hearing impaired. Science still strives to discover new and innovative ways to give the same opportunities to the people who are hearing impaired as people who are not.

Submitted by: Elsie Ng

Could coconut oil be the solution to creating an all natural toothpaste?

Image source: http://www.cbc.ca/news/technology/story/2012/09/03/sci-coconut-oil-tooth-decay.html

Oral hygiene affects everyone and with the increasing number of children and adults affected by dental caries, more commonly known as tooth decay, has some dentists suggesting we are undergoing an epidemic.  Tooth decay is caused by specific bacteria that erode the hard tissues of the teeth through the production of acid by hydrolysis of food debris.  When left untreated, this infection can spread and possibly lead to serious health complications such as Ludwig’s Angina.

Research done at the Athlone Institute of Technology’s Bioscience Research Institute in Ireland, suggests that coconut oil inhibits the growth of tooth decay causing bacteria and is comparable to the current toothpastes being used.  The research team led by Dr. Damien Brady tested the antibacterial action of coconut oil in both its natural state and when treated with enzymes.  Testing was performed on various strains of Streptococcus bacteria, the most commonly found bacteria in the mouth.  Dr. Brady and his team of researchers found that the enzyme-modified coconut oil substantially inhibited the growth of several strains of Streptococcus.  One of the acid producing, decay causing bacterium, Streptococcus mutans, was found to be strongly inhibited by the modified oil.  An earlier study demonstrating the effects of enzyme-modified milk and its reduction on the binding of Streptococcus mutans to tooth enamel encouraged Dr. Brady’s study on coconut oil.

Dental Caries
http://en.wikipedia.org/wiki/Dental_caries

 

Dr. Brady’s team presented their work at the Society for General Microbiology’s autumn conference at the University of Warwick on September 3, 2012.  Further work will be done on the molecular level interaction between coconut oil and Streptococcus bacteria.  The team will also be testing the modified-oil’s effect against yeast Candida albicans that can cause thrush.

 

 

 

Why do we care?

With the increase of dental caries being reported today, oral hygiene has become the center of public concern.  Excellent oral hygiene and fresh breath demands that we brush our teeth multiple times a day.  Although the frequency of tooth brushing has become the main focus, attention is lacking as to what ingredients in tooth paste are essential.  Tooth brushing has become a part of our daily routine, but have you ever wondered what your tooth paste is made from?  With ingredients like Sodium Hexametaphosphate, glycerin, hydrated silica and propylene glycol it’s no wonder we don’t question it more.  The public has demanded an increase in organic and health food products yet toothpaste seems to be overlooked.  The research being performed by Dr. Brady and his team could have potential benefits for the oral health care industry.  With the results from their research, there is the potential to reduce the amount of chemical additives in toothpaste and substitute modified coconut oil and other natural ingredients.

This blog post was submitted by: Layla Vera

 

 

Nuclear power to fight global warming: the pros and the cons

Since the late 20th century, a growing amount of concerns have arisen regarding of global warming. In the Kyoto Protocol in 1997, many countries agreed on their responsibility to reduce the emission of greenhouse gases in order to fight global warming. As the main source of greenhouse gases comes from the burning of coal to generate electricity, a lot of countries have to come up with alternative methods that do not emit greenhouse gases as the byproduct to generate electricity; the use of nuclear power is one of them.

Nuclear power and its significance

Nuclear power is the use of nuclear fission reaction to generate heat and electricity. Unlike the burning of coal, it does not produce CO2 as the byproduct. According to the International Energy Agency in 2006, 16% of the world electricity is supplied by nuclear power, while other greenhouse-gases-free energy sources, with the exception of hydro power, only all together

World electronic production in 2004
Chart by: InterAcademy Council

 

contributes to 2% of the world electricity production. The reason of the wide application of nuclear power and hydro power as opposed to other reusable energy sources lies on their low cost. According to Jason Morgan of nuclearfissionary.com, the cost of electricity production by nuclear fission is two times less than wind power and even five times less than solar power.

Downside of nuclear power 

Nuclear explosion of the Fukushima Daiichi Power Plant
Image from: David Twomey 

If nuclear power is both relatively cheap and CO2 emission free, would it be the ultimate solution to global warming? The Fukushima Daiichi nuclear disaster in Japan in 2011 gave an answer to this question. In March 11th,    2011, a 9.0 earthquake in Japan damaged the Fukushima Daiichi Power Plant reactor cooling system which led to a  radiation leak that affected the habitat within the 30km radius. According to studies by John Ten Hoeve and Mark Z. Jacobson of Stanford University, the radiation leak has killed around 15 to 1,300 people and caused around 24 to 2,500 cases of cancer. The effect of the radiation leak to the environment is shown in the video below:

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The impact of this disaster shows the devastating cost of generating electricity through nuclear plants once an accident occurs. In addition, unlike other energy sources, nuclear power generates a lot of radioactive wastes that would take billions of years to decompose to a level that is no longer hazardous to human. These radioactive wastes have to be carefully treated to avoid contamination of the ground and the water, which would cause health issues to humans.

Nuclear power: should we continue or not?

So, should we continue developing nuclear power or not? In my opinion, despite the cheap cost, the risk of nuclear power to humans has generated as much as, if not more than, the risk of greenhouse gases emission causing global warming. What do you think?

Blog post by: Mervin Wong