The
most popular dietary supplement outside of a multi-vitamins are energy
drinks. Red Bull. Monster. 5-Hour Energy. NOS. Full Throttle
and many others. According to some
research there are over 500 different energy drinks on the market. I bring up the topic of energy drinks because
they are particularly popular among teens and young people and some research
has shown that energy drink companies are marketing to this group. The biggest concern connected with energy
drinks is the potential for caffeine intoxication and other side effects
including seizures, mania and even sudden death. To understand the popularity of these
beverages in the United States you only need to know that in 2012 the energy
drink market was valued at $12.5
billion and young adults are considered the core market.
WHAT
IS AN ENERGY DRINK?
Energy
drinks typically contain caffeine, taurine, sugars and sweeteners and herbal
ingredients that are combined to give an “energy boost”. These drinks are distinctly different from
sports drinks and vitamin waters.
According to the National
Federation of State High School Association (NFHS) Position Statement and
Recommendations for the Use of Energy Drinks by Young Athletes,
“An energy drink is a beverage marketed to both athletes and the general public
as a quick and easy means of relieving fatigue and improving performance”
usually using very high concentrations of caffeine and carbohydrates. Energy
drinks differ from sports drinks because sports drinks
are designed to provide rehydration (and basic carbohydrate replacement) during
or after athletic activity, containing a 6% - 8% carbohydrate solution and a
combination of electrolytes formulated for maximum absorption.
Caffeine
is typically the main active ingredient in any energy drink, containing 70-80mg
per 8 ounce serving; energy shots can be even more concentrated. To give you an idea, a typical energy drink
contains about 3 times as much caffeine as a cola-based soft drink. The concern
with energy drinks is that although the amount of caffeine (added as pure
caffeine) may be listed on the ingredient label, the actual amount of caffeine
in any given drink is hard to calculate. This calculation is difficult because
most of these drinks include additional ingredients that contain caffeine, not
reflected on the ingredient label. Some
typical additives are guarana, kola nut, yerba mate, cocoa, green tea,
synephrine, and yohimbine among others.
The International
Society of Sports Nutrition (ISSN) Position Stand: Energy Drinks (2013) has published several
tables that can easily help you understand the ingredient list of several
common energy drinks in the United States as well as the purported effect of
many of the ingredients found in energy drinks.
TEEN
AND ADOLESCENT CONSUMPTION OF ENERGY DRINKS
According
to some study data teens consume 60 – 70 mg/day of caffeine, mostly from
soft drinks. Caffeine consumption has ranged as
high as 800 mg/day in some studies and energy drinks are becoming more and more
popular. Some research shows that drink makers
are even marketing to younger consumers.
These companies are savvy and use sporting events and athlete
sponsorships, along with key product placement on social media sites and in
video games to connect with your kids.
Consumption rates vary, with one study finding that 28% - 34% of 12 to 24
year-olds regularly consume energy drinks,
College students were particularly prone to consuming energy drinks
habitually to improve energy (usually due to a lack of sleep).
HEALTH
CONCERNS RELATED TO ENERGY DRINKS
Energy
drinks can pose a risk to anyone who consumes them, with the most commonly reported symptoms centering around caffeine toxicity.
Energy drinks are not regulated by the FDA because they are considered dietary supplements (unlike soda which is limited to 71 mg caffeine per 12 oz.
soda). The FDA is currently responsible
for investigating “Adverse
Event” reports related to energy drinks and energy
shots. Currently there are reports
regarding Monster, Rockstar, Red Bull, and 5-Hour Energy that you can view HERE.
The
top 10 side effects associated with energy drinks according to a study by the Medical
Journal of Australia are listed below.
These results are based on analysis of 7 years of phone calls to their
poison control center.
- Palpitations/tachycardia (rapid heart rate)
- Tremor/shaking
- Agitation/restlessness
- Gastrointestional upset
- Chest pan/ischemia
- Dizziness/syncope (fainting)
- Paraesthesia (altered sensation)
- Insomnia
- Respiratory distress
- Headache
Of
these, the most
concerning are the cardiac symptoms.
There is a concern that caffeine toxicity in children with a cardiac
condition (known or unknown) could ultimately lead to death due to sudden
cardiac arrest. Cardiac events could be
especially of concern in children with ADHD, an eating disorder or those with diabetes. There is some research
(although controversial) that suggests calcium deposition in the bone is
decreased in adolescents because caffeine interferes with intestinal calcium absorption. I bring this up because the adolescent years are the period of the most significant bone development
An
additional concern, particularly for college age adults is the combination of
alcohol and energy drinks. Doing so
often gives individuals a false sense of sobriety, leading to poor decision-making. This topic is beyond the scope of this post,
but if you’d like more information check out this
article to learn more about the warning issued by the American Medical
Association.
POSITION
STATEMENTS AND OTHER RESOURCES REGARDING ENERGY DRINKS
Listed
in this section are current position statements and other articles regarding
the consumption of energy drinks with a particular focus on teen and adolescent
consumption as sources allow. I have
used these sources to help inform this blog post, but I encourage you to read
the full articles and position statements to gain a fuller understanding of the
topic.
Submitted by Heather L. Clemons, MS, MBA, ATC