

“Grandpa’s little helpers” was a very interesting article recently printed in the Globe and Mail. It describes how savvy marketers are now targeting the Baby Boom generation for their pocket-sized energy drinks. According to the article, companies are claiming that “those who drink them will be amped up for hours… (it is) the youthful tonic when coffee just isn’t enough.”
But are these drinks really safe for older adults? Well, there are several points to consider. First of all, large amounts of caffeine (even from natural sources such as yerba mate and guarana primarily used in these drinks) can cause problematic side effects such as restlessness, anxiety, nervousness, insomnia and gastrointestinal disturbances. In fact, Health Canada recommends that adults limit their caffeine intake to no more than 400mg per day for this very reason.
How much caffeine is in a typical energy drink? Well, it’s difficult to know exactly. Labelling for energy drinks is not the same as it is for foods and beverages in Canada. You won’t find a “Nutrition Facts” section on the label because it is classified by Health Canada as a “Natural Health Product.” Manufacturers simply have to declare that there is a source of caffeine in the product but do not have to declare how much. It is said that on average, there is approximately 200mg per bottle. When you consider that 63 percent of Canadians already consume most of their daily caffeine allowance in coffee, exceeding 400mg per day would be very easy to do.
Another issue with these drinks is that they can often contain amino acids, herbal supplements or vitamins. These may have unknown effects on an individual or could possibly even result in a potentially harmful medication interactions.
So based on the current evidence, the old adage of everything in moderation may apply but buyer beware…until labelling regulations become more specific about the amount of caffeine in the product and until there is more research available on the herbal supplements, vitamins and amino acids added to these drinks, it may not be worth the risk to your health.
References – All reference information taken from Dietitians of Canada “Practice Based Evidence” website. Detailed reference list as follows:
Statistics Canada. Beverage consumption of Canadian adults. 2008 [cited 2010 5 Aug]. Available from: http://www.statcan.gc.ca/pub/82-003-x/2008004/article/6500240-eng.htm
Nawrot, P, Jordan S, Eastwood J, Rotstein J, Hugenholtz A, Feeley M. Effects of caffeine on human health. Food Addit Contam. 2003 [cited 2010 5 Aug]:20(1):1-30. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/12519715
International Food Information Council Foundation (IFIC) Review. Caffeine & health: clarifying the controversies. 2008 [cited 2010 5 Aug]. Available from: http://www.foodinsight.org/Resources/Detail.aspx?topic=IFIC_Review_Caffeine_and_Health_Clarifying_the_Controversies
Higdon JV, Frei B. Coffee and health: a review of recent human research. Crit Rev Food Sci Nutr. 2006 [cited 2010 5 Aug];46(2):101-23. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/16507475
Ker K, Edwards PJ, Felix LM, Blackhall K, Roberts I. Caffeine for the prevention of injuries and errors in shift workers. Cochrane Database System Rev. 2010 [cited 2010 5 Aug],Issue 5. Art. No.: CD008508. DOI: 10.1002/14651858. Abstract available from: – http://www.ncbi.nlm.nih.gov/pubmed/20464765
Health Canada. It’s your health. Caffeine. [cited 2010 Aug]. Available from: http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/food-aliment/caffeine-eng.php
Wyatt JK, Cajochen C, Ritz-De Cecco A, Czeisler CA, Dijk DJ. Low-dose repeated caffeine administration for circadian-phase-dependent performance degradation during extended wakefulness. Sleep. 2004 [cited 2010 5 Aug];1;27(3):374-81. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/15164887
The Canadian Tea and Coffee Industry [cited 2010 5 Aug]. Available from:. http://www4.agr.gc.ca/AAFC-AAC/display-afficher.do?id=1172237152079&lang=eng
Roehrs T, Roth T. Caffeine: sleep and daytime sleepiness. Sleep Med Rev. 2008 Apr [cited 21 2010 Apr];12(2):153-62. Available from: http://www.ncbi.nlm.nih.gov/pubmed/17950009
Health Canada. It’s your health. Safe use of energy drinks. 2010 [cited 2010 5 Aug]. Available from: http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/food-aliment/boissons-energ-drinks-eng.php
Health Canada. Health Canada reminds Canadians to manage caffeine consumption. Information update. 2010 [cited 2010 5 Aug]. Available from: http://www.hc-sc.gc.ca/ahc-asc/media/advisories-avis/_2010/2010_40-eng.php
American Academy of Pediatrics Committee on Drugs. The transfer of drugs and other chemicals into human milk. Pediatrics. 2001 [cited 2010 5 Aug];108(3):776-89. Abstract available from http://www.ncbi.nlm.nih.gov/pubmed/11533352
Health Canada. Preliminary guidance for industry on the labelling of caffeine content in prepackaged foods. 2010 [cited 2010 5 Aug]. Available from: http://www.hc-sc.gc.ca/fn-an/legislation/guide-ld/etiquetage-caf-labelling-eng.php
Food and Nutrition Board, Institute of Medicine.. Dietary Reference Intakes for water, potassium, sodium, chloride, and sulfate. Washington, D.C.: The National Academies Press; 2005 [cited 2010 5 Aug]. Available from: http://www.nap.edu/openbook.php?record_id=10925
Armstrong LE, Pumerantz AC, Roti MW, Judelson DA, Watson G, Dias JC, et al. Fluid, electrolyte, and renal indices of hydration during 11 days of controlled caffeine consumption. Int J Sport Nutr Exerc Metab. 2005 [cited 2010 5 Aug];15(3):252-65. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/16131696
Grandjean, AC, Reimers, KJ, Bannick KE, Haven MC. The effects of caffeinated, non-caffeinated, caloric and non-caloric beverages on hydration. J Am Coll Nutr. 2000 [cited 2010 5 Aug];19(5):591-600. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/1102287217.
Smith N, Atroch AL. Guaraná’s journey from regional tonic to aphrodisiac and global energy drink. Evid based Complement Alternant. 2007 [cited 2010 5 Aug]:1-4. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/18955289
Heck CI, de Mejia EG. Yerba Mate Tea (Ilex paraguariensis): A comprehensive review on chemistry, health implications, and technological considerations. J Food Sci. 2007 [cited 2010 5 Aug]: 79(9):R138-151. Abstract available from: http://www.ncbi.nlm.nih.gov/pubmed/18034743






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