Since Track Season started, and considering I am coaching again this Spring, it has been hard to keep formulating blog posts on the main topics I have collected notes and thoughts for...like LEAVING THE COMFORT ZONE for optimal performance development and Practice Like You Want to Perform, which gives examples of how to train for performance, not work capacity.
Until I get those off the drawing board I would like to send out some very good informational articles that SHOULD BE OF CONCERN TO YOUNG ATHLETES, PARENTS AND COACHES. Since there is so much marketing hype using top athletes to market supplements, energy and vitamin drinks and every other tech gadget, I thought I would start with something that MAY be harmful to many athletes of ALL AGES.
Like I said before, go to any high school track, football, soccer or lacrosse practice or game and notice the mountains of energy and vitamin drinks that accumulates in OR near the trash receptacles. LISTEN, LEARN, LIMIT!!!
Novel drinks deliver nutrient overkill, create health
concerns for consumers
ALEX
HUTCHINSON …Special to The Globe and Mail
Published
Sunday, Mar. 15 2015
When
Dr. Valerie Tarasuk had minor house repairs done earlier this year, she
couldn’t help noticing what the two workers discarded at the end of the day.
“After
they left, I found a six-pack of energy drinks in the garbage,” recalls
Tarasuk, a professor of nutrition science at the University of Toronto. “And I
just thought, holy cow.”
Critics
have long assailed the high sugar content and amped-up caffeine doses of some
energy drinks, but Tarasuk had another concern. Did the men realize, she
wondered, just how large a dose of vitamins they were getting?
Since
2004, when Canada first began allowing the sale of “nutrient-enhanced novel
beverages” – Red Bull was the first product available in this new class – the
number of these drinks on store shelves has proliferated. Canadians now buy
nearly $500-million of energy drinks each year. Amid growing concern about
potentially misleading health claims, in 2011 Health Canada implemented new
rules about how vitamin-fortified drinks are labelled.
But
a new analysis by Tarasuk and her colleagues suggests little has changed since
the rules were enacted, and critics argue that packing sugary drinks with
vitamins is simply “health-washing.” These added vitamins give a healthy veneer
to sugary drinks, though they are as likely to hurt well-meaning consumers’
health as help it.
Tarasuk
and her colleagues analyzed the contents and labelling of 46 different “novel
drinks” – a category that includes caffeine-spiked energy drinks as well as
vitamin-enhanced waters and juices – from three Toronto supermarkets,
publishing the results in the journal Applied Physiology, Nutrition and
Metabolism last month. The median number of added nutrients per product was
4.5, and almost every beverage contained at least one nutrient in excess of the
daily requirements of young adults.
“It
was nothing to find something with two, three, four, in some cases even 12
times the average requirement for an adult male,” Tarasuk says. “It makes no
sense that you would pick up one bottle of something and it would give you that
much B6.”
In
the past, Canadian law only permitted nutrient fortification to address
public-health concerns related to widespread deficiencies, which led to the
addition of iodine to salt, folic acid to flour, and vitamin D to milk. The
move to “discretionary fortification,” long permitted in the United States and
Europe, lets manufacturers deploy a whole new range of micronutrients.
In
Tarasuk’s study, the most commonly added nutrients were vitamins B6, B12, C and
niacin. According to Health Canada statistics, virtually no Canadians are
deficient in B6, B12 or niacin, while just 13.7 per cent of Canadians could use
more vitamin C.
So
why bother adding them to your drink? The obvious reason is that they make the
drink sound healthier, which is the crux of a class-action launched by the
Center for Science in the Public Interest against Coca-Cola’s Vitaminwater line
in 2009.
“Unfortunately,
Coke continues to convince many consumers that Vitaminwater is a healthy
alternative to water, when in fact it’s much more similar to a can of Coke,”
says Amanda Howell, the Dallas-based assistant director for litigation at CSPI.
Vitaminwater has 120 calories from sugar (the equivalent of eight teaspoons of
sugar) in a 591-millilitre bottle, while a comparable bottle of Coke has 260
calories.
One
of the arguments advanced by lawyers for Coca-Cola during the proceedings,
strangely enough, was that this tactic wouldn’t work because “no consumer could
reasonably be misled into thinking Vitaminwater was a healthy beverage.”
A
settlement has been proposed in four states plus the U.S. Virgin Islands, but
the case continues in California and New York, Howell says.
Meanwhile,
similar suits have proceeded against PepsiCo’s Naked Juice, POM Wonderful and
Dr Pepper Snapple Group’s 7UP Antioxidant drinks.
Beyond
health-washing, critics worry that ubiquitous fortification might lead some
people to get too much of an otherwise good nutrient, especially since half of
Canadians also report taking vitamin or mineral supplements in pill form.
Researchers
at Wake Forest School of Medicine in North Carolina recently published an
assessment of overall vitamin and mineral intake in the general population in
the journal Critical Reviews in Food Science and Nutrition. They concluded that
fortified foods and drinks are increasing the number of people who exceed the
safe upper limits for certain micronutrients. (Calcium, for example, is a
crucial mineral but has been linked to increased risk of heart attack when
taken in excess.)
While
many vitamins are water-soluble, meaning you get rid of excess amounts in your
urine, that doesn’t mean it’s impossible to get too much, Tarasuk points out.
Large doses of vitamin C, which is water-soluble, can cause diarrhea, and
recent studies have suggested that vitamin C supplements can block some of the
fitness gains you would otherwise get from exercise.
One
way to avoid this problem is to read the labels and monitor what you’re
getting. Under Health Canada’s new rules, vitamin and energy drinks are treated
as foods and have to include a standard panel displaying nutritional
information. This is a big improvement over the situation when Tarasuk and her
colleagues performed a similar analysis of novel beverages back in 2010. “We
couldn’t even find their calorie content, because they didn’t have to declare
it,” Tarasuk recalls. “So most of the ‘energy’ drinks didn’t tell you how much
energy was in them.”
Even
among consumers who read labels carefully, after all, how many are really
equipped to make a judgment about the merits or risks of quaffing, say, 500 per
cent of your daily riboflavin needs?
In
the end, vitamin overdose is hardly likely to emerge as the next big
nutritional crisis. But with no apparent benefit and little understanding of
the long-term effects of indiscriminate supplementation, Tarasuk believes we
should at least be thinking more carefully about the pros and cons. Because
under the current rules, she says, “I think we’ve embarked on an experiment on
our population.”
Alex
Hutchinson blogs about exercise research at sweatscience.runnersworld.com.
His latest book is Which Comes First, Cardio or Weights?
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