New Buzz on Caffeine

Among the most frequently asked questions I get is about caffeine. Is it safe? How much is okay? Is it the newest health food? I’d like to answer a lot of these questions right now. It’s also the topic of this week’s Today Show segment:

What is caffeine, and where does it come from?

New Buzz on CaffeineCaffeine is naturally-occurring in many plants, and found in the leaves, seeds, and/or fruits of more than 60 plant types. The most common sources are coffee beans, cocoa beans, and kola nuts. Caffeine is a stimulant, and has numerous positive nervous system effects, including fighting fatigue and improving mental alertness and focus, and increasing athletic performance.

Is caffeine safe to consume?

Thousands of studies have been done testing caffeine’s safety. In a word: Yes. Studies repeatedly demonstrate that caffeine is safe and effective with moderate intake (defined as 300 mg per day–see below for caffeine content of drinks) and does not cause any ill effects in healthy adults (and children). Some people who are “caffeine sensitive”–like people with high blood pressure and the elderly–may need to consume less to avoid negative effects like rapid heart beat, stomach upset, sleeplessness or an increase in blood pressure.

How much caffeine is found in food and drinks?

These amounts are approximate, and can vary depending on size, and method of preparation. But, they are a good rule of thumb to guide you:

Coffee/Tea/Soda:

10 oz. mug of black coffee

100 mg

1 shot (1 oz.) of espresso

50 mg

10 oz. mug of tea

50 mg

12 oz. can of soda

40 mg


Chocolate Products:

chocolate milk/cocoa

5 mg

1 oz. milk chocolate

5 mg

1 oz. dark chocolate

20 mg


Energy Drinks (Some examples of many on the market):

2.5 oz. UpShot

200 mg

16 oz. Rock Star

160 mg

8.3 oz. Red Bull

80 mg


Energy “Pills”

1 pill Max. Strength No Doz

200 mg


What about other health benefits?

While most of us are familiar (and seek out) the stimulant properties of caffeine, there are other positive health aspects to consider. While these are just associations–observed in large population studies comparing health risk and caffeine intake–they suggest that the actions of caffeine are more widespread.

These actions include a reduction in the risk of type 2 diabetes, Parkinson’s disease, some liver diseases, and colorectal cancer. So, don’t start drinking coffee as a “health food," but these may be some “value added” factors you didn’t know about!

Aren’t there a lot of negative effects caffeine can have?

madelyn_coffee.jpgSome negative effects can occur for some people, in amounts usually over 300 mg/day, or a single higher dose of over 200 mg. You may need to experiment yourself to know best: Remember to calculate both the amount of caffeine you have in a specific drink, as well as the total consumed all day.

For women with low calcium intake, too much caffeine might contribute to bone loss. Interrupted sleep can occur, as can reflux and stomach upset. An increase in blood pressure can occur in some people as well. Some people report nervousness, and a more rapid heartbeat.

Check with your doctor if you sense some negative effects associated with your caffeine intake.

Are coffee and tea different from caffeine in their reported actions?

Coffee and tea, while containing caffeine, also contain many health-promoting antioxidants. While consuming coffee or tea for their health benefits is not recommended, if you’re a coffee or tea drinker, doing so in moderation might contribute to your overall good health.

Watch this Street Talk clip where we asked people on the street "How many cups of coffee do you drink a day?"


Please weigh with any comments or questions on your mind!

December 10, 2007 at 01:00pm | Permalink | Comments (24)

Comments

Why don't drink labels state how much caffeine is in the product?

Posted by Samantha on December 10 at 07:41pm

What about addiction? For this reason, is it dangerous for children?

Posted by dbanks on December 10 at 09:25pm

I have used caffiene tablet first thing in the morning for @ 15 years. I don't drink caffinated drinks. Is prolonged use of the tablets a concern? I don't go over 200-300 mgs a day. Where can I get more information of effects of caffiene tablets?

Posted by Phyllis on December 11 at 12:21pm

Is a person more likely to pooh their pants after drinking a caffeinated beverage?

Posted by Dexter on December 11 at 03:42pm

what in this article is new? why is it interesting?

Posted by CM Law on December 11 at 09:03pm

Is there a link between drinking caffeine and our natural production of adrenaline? Does it contribute to a shutdown of our adrenal glands over time, and why the massive headaches when quitting? How long does these withdrawal symtoms last? I've gone for three weeks with migraines and extreme lethargy but would like to quit.

Posted by Star on December 13 at 08:08am

There is also a link between the use of caffeine and dry eye syndrome and fibrous cysts of the breast. Not that it causes it, but if you are predisposed to either one, it will make it worse.

Posted by karla ramirez, md on December 13 at 10:03am

Lately I have taken to throwing the spent coffee grounds and leftover coffee onto my banana plant out the back door. The plant is a lush green and outdoing any of the others that don't get their dose of daily caffeine and topical composting. So, oh no...don't "start drinking coffee as a health food"...because god forbid your article ever being accused of reversing the false pop medical theory from the 70's - 90's that coffee is bad for you.

Posted by cheryl on December 14 at 07:20am

yes. Caffeine can cause physical and psychological addiction. Caffeine pills are just safe as their equivalent dose in coffee/pop/tea. 100mg from a 10oz. cup of coffee is the same thing as a 1/2 of a 200mg caffeine tablet.

Posted by mattressman316 on December 14 at 11:23pm

Is a person less likely to get laid when named Dexter?

Posted by Fexter on December 15 at 01:28pm

Caffeine increases gastric motility but no "pooh in pants (PIP)" that I'm aware of.

Posted by Mark on December 17 at 05:19am

yes, especially if the caffeinated beverage happens to be Mt. Dewwwww (DoOO). Seriously...it does happen to us (well, my little sister more than me, I tend toward constipation but morning coffee works. Hope this helps you feel less alone

Posted by CalamityJane&AnnieOakley,sisters on December 17 at 09:33pm

Your nose needs work, it seems to be firmly inplanted in the hip cheeks of starbucks.

For the positive benefits you imply all people, for the negative aspects, you say some people.

Do you honestly think that you have one iota of integrity?

Barnum and Bailey had it wrong. The crowds are all suckers.

Posted by Joe Kenrick on December 18 at 10:11am

taking a caffeine pill first thing in the morning is an excellent laxative!!!
(Phyliss-I too have been taking caffeine pill every single moring for several years...hope its safe!)

Posted by kam on December 18 at 04:28pm

Yes, the onset of pants poohing has shown to increase with as little as 3 cups of coffee a day. For more dramatic results our studies have shown that the consumption of sesame seeds, peanuts & corn can create virtual fireworks beneath your undergarments along with 200-300 mg caffeine per day.

Posted by Dr. T on December 18 at 07:28pm

Hi! Your web site is helpful. Many thanks. Best regards!

Posted by Stefan on December 19 at 06:37am

Yes, a person is more likely too pooh their pants after drinking a caffeinated beverage. But that doesn't say much. Lets say there is a .01 percent chance that you will pooh your pants without a caffeinated drink; after a caffeinated drink there is a .02 percent chance you will pooh your pants. Thats twice as likely but still a very low chance.

Posted by Ray on December 19 at 09:41am

"Oh My God" LOL

Posted by Steph on December 20 at 02:33am

I am laughing so hard I think I just pooped my pants, and I haven't had caffeine today. Does that make it less likely that caffeine is the culprit?

Posted by Scoop on December 20 at 02:40am

I think that this is new groundbreaking evidence that coffee increases motility. If just bloging about caffein makes you poo then....

Posted by Blue on December 27 at 01:02pm

Poo Poo happens....with or without caffeine! LOL

Posted by inmyopinion on January 03 at 01:42pm

I have Lupus, and I have started drinking Redbulls in the past month or so I have noticed less fatigue for one, but have noticed that I also have less pain in my joints some days, not every day, but some,I know with Lupus that everything involved with it comes and goes, but could there be something else in the Redbull that might contribute to this?

Posted by Bonnie on January 07 at 03:08pm

It was mentioned a bit about bone loss in the article. I learned that caffeine, animal protein, smoking,and phosphoric acid all leech calcium out of your bones (not your system) pulling it into the kidneys where kidney stones are built (calcification) and resulting in massive pain in trying to pass those stones (can be up to the size of a quarter....imagine passing that thru your pee-pee hole) if surgery is not quickly utilized.

yeah..i dont know about all this caffeine stuff.

Posted by Meesh on January 19 at 01:03am

oh yeah.....and milk also makes people go #2 consistently after consumption. But that doesnt mean thats a good thing. It just says they're allergic to it. Lactose-intolerant, i believe its called. Like 75% of the world is right now.

Posted by meesh on January 19 at 01:05am

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This Blog is designed for educational purposes only. You should not rely on this information as a substitute for personal medical attention, diagnosis or hands-on treatment. If you are concerned about your health, please consult your family’s health provider or go to the emergency room.

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Madelyn Fernstrom, PhD, CNS, is the founder and director of the University of Pittsburgh Medical Center's Weight Management Center..

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