Monday Punday meets Caffeine Safety Limits – Book Excerpt of the Week

Pretend you’re on a on vacation and you’re given $400 a day, every day, to cover your expenses. Would you spend that all at once or try to make it last the whole day? Now pretend that money allowance is actually your caffeine allowance, which brings us to our excerpt of the week:

The Background

Consuming up to 400 milligrams of caffeine per day is considered safe for the healthy adult population. This limit was determined by the Bureau of Chemical Safety, Food Directorate of Health Canada. The FDA uses this limit because it’s based on a comprehensive review of published studies on the effects of caffeine on human health. 

Essentially the authors of this review searched all published studies on human health and caffeine, then determined the overall consensus among the studies. 

The consensus was consuming 400 milligrams of caffeine per day doesn’t pose a threat to the heart, the bones, or male fertility, and doesn’t cause general toxicity or increased incidents of cancer. Consuming caffeine safely means not exceeding this 400 milligrams per day limit.
The Lesson

Before consuming an energy drink, look at the number of milligrams of caffeine per serving and the number of servings per container. Careful not to blow your whole caffeine allowance in one shot. 

Learn more about the ABCs of Caffeine Safety in “Are You a Monster or a Rock Star-A Guide to Energy Drinks: How They Work, Why They Work, How to Use Them Safely”.

What do energy drinks, aspirin, and multivitamins have in common? Book Excerpt of the Week

You wouldn’t eat 5 multivitamins or take 10 aspirin a day because that could make you sick. How frequently you consume an energy drink is just as important to your safety. There are many energy drinks* that are not bad for your health nor dangerous if consumed in moderation.

[*And then there are caffeinated supplements, including powder pre-workout supplements and liquid drinks like REDLINE that have so much caffeine  per serving they are dangerous/too caffeinated even when consumed as directed]

This Book Excerpt of the Week comes from PART ONE: ABCs of Caffeine Safety, C= Consumption Specifics.

For more information, check out “Are You a Monster or a Rock Star-A Guide to Energy Drinks: HowThey Work, Why They Work, How to Use Them Safely”, available on Amazon and wherever books are sold.


Happy Caffeine Awareness Month! Top 10 ways to improve your caffeine IQ

March is Caffeine Awareness Month, and what better way to celebrate than to revisit some of the most popular caffeine-related GreenEyedGuide posts! Remember that rebuttal to BroBible’s energy drink article or the open letter to Time magazine? How about the three tips for parents or the two Year-In-Review lists of all the “Energy Drink of the Month” winners? Do you remember what happens when energy drinks dress up like workout supplements?
(Click the title to open the article in a new tab)

ONE – BroBible on Energy Drinks — All the Facts They Got Wrong

BroBible may be have expert insights on some matters, but their article on energy drinks proves biology and food science isn’t in their wheelhouse. Here’s the point-counterpoint to all the misleading statements in their article.

BroBible's misleading infographic on energy drink "science"
BroBible’s misleading infographic on energy drink “science”

TWO – Open Letter to Time regarding energy drink article in “The Answer Issue”

As a food scientist who’s studied energy drinks for over 10 years, Ms Sifferlin’s article came across as yet another “all energy drinks are lethal” story. While the article was missing many crucial facts, there were three points in particular that should be part of the conversation.

energy drink spread

THREE – Caffeine in Workout Supplements and the 5 Levels of Fatigue

This presentation covers the effects of caffeine when it’s consumed before, during, or after a workout. We also review how the Five Levels of Fatigue helps people determine which caffeine products (if any) are right for them.

FOUR – Energy Drinks and the ER — perspective

Energy drinks are in the news again, and this time the story is the reported increase in emergency room visits attributed to energy drinks. Are these stats more indicative of consumer misuse or that energy drinks are inherently more dangerous than other caffeinated beverages? Some clues to consider.

FIVE – Friends with the Monster? 3 Crucial Counterpoints to the Energy Drink Debate

As always, my goal is to educate and inform, to provide an alternate perspective to help people look past confusing scientific jargon and learn the tools to making the best choices for their lifestyle. Caffeine is not always the answer but to find the right answers we must ask the right questions.

SIX – Pop Quiz: Test your Caffeine IQ

Do you know the most common energy drink ingredient? (NO – IT’S NOT CAFFEINE!) Test your caffeine IQ with these 5 questions.


SEVEN – Kids and Energy Drinks — 3 Things Every Parent Should Know

How concerned do parents need to be about the use of energy drinks in kids and teens? In the Green-Eyed Guide guest blog on The Scientific Parent, we review the three major details often left out of these conversations on caffeine, and how these details can dramatically boost our efforts to keep ourselves and our kids healthy and safe.

Sci Parent

EIGHT – Caffeine Consumption in the USA

A study published in January 2014 involving over 40,000 people defines beverage caffeine intakes in the US, revealing the amounts of caffeine consumed and from what source per age group. As your Green-Eyed Guide, I’m going to explain what it all means.

Used with permission from Caffeine Informer. Source: Caffeine Safe Limits
Used with permission from Caffeine Informer. Source: Caffeine Safe Limits

NINE – Caffeine Consumption in the USA Part II: The Specifics

What can 42,000 people tell us about the caffeine habits of the US population? Plenty, if you look at the right details. Understanding this information is critical to any conversation about caffeine safety.

TEN – Putting Caffeine in Gum is a BAD IDEA, here’s why…

With new caffeinated foods popping up, the FDA is getting more pressure to reevaluate the safety of caffeine, particularly for adolescents. We evaluate the impact of caffeinated gum and why CANADA has the best caffeine regulations.



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