September 22nd, 2010
03:31 PM ET

Can caffeine cause intoxication?

“Can too much caffeine make you insane – and mentally unstable enough to unknowingly kill someone?” This Just In blogger Mallory Simon of CNN.com, posed the question in her post about a buzzworthy murder defense.

A man’s defense attorneys are expected to make the claim that too much soda, caffeine-laced diet pills and the energy drink No Fear combined with sleep deprivation, resulted in a “temporary psychotic disorder" and so, the defendant Woody Will Smith couldn't be criminally responsible for the murder of his wife.

Amanda Hornsby-Smith was strangled with an extension cord in 2009.

Having too much caffeine can produce an effect known as caffeine intoxication, said Daniel P. Evatt, a research fellow in the department of psychiatry at the Johns Hopkins University School of Medicine, who is not involved in the case.  Evatt researches the psychological effect of caffeine and spoke about this effect, but not as it relates to the criminal case.

“A lot of people use caffeine without any reported problems particularly when they’re using in moderate doses,” he said.

But if someone uses a lot of caffeine all at once, he or she could experience caffeine intoxication, which is included in the Diagnostic and Statistical Manual of Mental Disorders IV, which sets guidelines for psychiatric disorders.

Here's what DSM-IV says about caffeine intoxication:

-Recent consumption of caffeine, usually in excess of 250 milligrams (a 20-ounce bottle of Coke contains 57 milligrams)

-Demonstration of 5 or more of the following signs during or shortly after caffeine use: restlessness, nervousness, excitement, insomnia, flushed face, frequent urination, gastrointestinal disturbance, muscle twitching, rambling flow of thought and speech, tachycardia or cardiac arrhythmia, periods of inexhaustibility and psychomotor agitation.

-These symptoms cause significant distress or impairment, and are not caused by another mental disorder.

In rare circumstances, rambling thoughts or speech and hallucinations could occur to people who are already predisposed to it, Evatt said.

Some of the more severe symptoms of caffeine intoxication comes from having consumed about 800-1,000 milligrams of caffeine.  The tolerance to caffeine varies for individuals. While one person might suffer adverse reactions from too much caffeine from having just one energy drink another person may feel nothing from the same amount.

But caffeine intoxication is not usually severe enough to cause delusions or hinder decision-making capacity, Evatt said.

soundoff (782 Responses)
  1. aika private server english

    Hello! I could have sworn I’ve been to this website before but after going through a few of the posts I realized it’s new to me. Nonetheless, I’m certainly happy I found it and I’ll be bookmarking it and checking back often!


    May 4, 2021 at 21:05 | Report abuse | Reply
  2. game aika online

    Next time I read a blog, Hopefully it does not fail me just as much as this particular one. After all, Yes, it was my choice to read through, however I genuinely believed you would have something interesting to talk about. All I hear is a bunch of complaining about something you could possibly fix if you weren't too busy searching for attention.


    May 4, 2021 at 21:52 | Report abuse | Reply
  3. aika online private server

    Right here is the right site for everyone who wants to find out about this topic. You know a whole lot its almost hard to argue with you (not that I personally would want to…HaHa). You certainly put a fresh spin on a topic that's been discussed for decades. Great stuff, just wonderful!


    May 4, 2021 at 22:46 | Report abuse | Reply
  4. RV Alignment California


    May 5, 2021 at 00:47 | Report abuse | Reply
  5. business coach

    An impressive share! I have just forwarded this onto a co-worker who had been conducting a little research on this. And he actually bought me dinner because I stumbled upon it for him... lol. So allow me to reword this.... Thanks for the meal!! But yeah, thanks for spending time to discuss this subject here on your site.


    May 5, 2021 at 05:38 | Report abuse | Reply
  6. online executive training

    A fascinating discussion is definitely worth comment. I think that you need to publish more on this topic, it might not be a taboo subject but typically people don't discuss these issues. To the next! Cheers!!


    May 5, 2021 at 11:37 | Report abuse | Reply
  7. kenworth t170


    May 5, 2021 at 14:28 | Report abuse | Reply
  8. BB guns for kids

    I really like this post


    May 5, 2021 at 15:48 | Report abuse | Reply
  9. Lasik Surgery Phoenix


    May 5, 2021 at 17:36 | Report abuse | Reply
  10. giant near me

    I was able to find good advice from your content.


    May 5, 2021 at 19:41 | Report abuse | Reply
  11. chase orange county

    You have made some good points there. I checked on the internet for additional information about the issue and found most people will go along with your views on this web site.


    May 6, 2021 at 00:02 | Report abuse | Reply
  12. outside van conversion


    May 6, 2021 at 01:03 | Report abuse | Reply
  13. truck repair shop near me


    May 6, 2021 at 05:32 | Report abuse | Reply
  14. road service truck repair near me

    I wanted to thank you for this fantastic read!! I certainly loved every little bit of it. I have you book-marked to look at new things you post…


    May 6, 2021 at 09:42 | Report abuse | Reply
  15. haircuts near me


    May 6, 2021 at 13:23 | Report abuse | Reply
  16. massage places near me

    This is a good tip especially to those new to the blogosphere. Short but very accurate info… Thank you for sharing this one. A must read article!


    May 6, 2021 at 17:17 | Report abuse | Reply
  17. fiberglass rv repair

    This is the perfect webpage for everyone who would like to find out about this topic. You know a whole lot its almost tough to argue with you (not that I actually would want to…HaHa). You certainly put a new spin on a subject that has been written about for ages. Excellent stuff, just wonderful!


    May 6, 2021 at 17:28 | Report abuse | Reply
  18. New Forklift Rental California

    I absolutely love your website.. Pleasant colors & theme. Did you build this site yourself? Please reply back as I’m hoping to create my own personal website and would like to find out where you got this from or exactly what the theme is called. Many thanks!


    May 6, 2021 at 17:56 | Report abuse | Reply
  19. chase bank near me


    May 7, 2021 at 04:11 | Report abuse | Reply
  20. rv furniture outlet store near me

    You should take part in a contest for one of the most useful websites on the net. I'm going to recommend this site!


    May 7, 2021 at 06:34 | Report abuse | Reply
  21. Kosher Wine Company

    I could not refrain from commenting. Well written!


    May 7, 2021 at 08:41 | Report abuse | Reply
  22. Forklift Rental Orange County

    Oh my goodness! Awesome article dude! Thank you so much, However I am having problems with your RSS. I don’t know the reason why I am unable to join it. Is there anybody else getting similar RSS issues? Anyone who knows the answer will you kindly respond? Thanx!!


    May 7, 2021 at 08:41 | Report abuse | Reply
  23. Forklift Extensions

    Excellent article! We will be linking to this particularly great post on our site. Keep up the good writing.


    May 7, 2021 at 09:26 | Report abuse | Reply
  24. psychologist near me


    May 7, 2021 at 15:04 | Report abuse | Reply
  25. rv inspection service near me

    This is a topic which is close to my heart... Thank you! Exactly where are your contact details though?


    May 7, 2021 at 19:48 | Report abuse | Reply
  26. Content Marketing Help

    Hello, I believe your site may be having web browser compatibility issues. When I look at your website in Safari, it looks fine however when opening in Internet Explorer, it's got some overlapping issues. I just wanted to provide you with a quick heads up! Besides that, fantastic website!


    May 7, 2021 at 23:14 | Report abuse | Reply
  27. stake center near me

    You made some decent points there. I looked on the web to find out more about the issue and found most individuals will go along with your views on this site.


    May 7, 2021 at 23:33 | Report abuse | Reply
  28. Internet Marketing Specialists


    May 8, 2021 at 02:13 | Report abuse | Reply
  29. Content Marketing Consultant


    May 8, 2021 at 04:15 | Report abuse | Reply
  30. Google Marketing Business

    I couldn’t refrain from commenting. Perfectly written!


    May 8, 2021 at 08:09 | Report abuse | Reply
  31. Internet Marketing Association

    Howdy! This article could not be written much better! Going through this article reminds me of my previous roommate! He continually kept preaching about this. I'll send this post to him. Fairly certain he'll have a very good read. Thank you for sharing!


    May 8, 2021 at 11:06 | Report abuse | Reply
  32. Internet Marketing Experts

    Hey there! I just wish to offer you a big thumbs up for the great information you've got right here on this post. I am returning to your site for more soon.


    May 8, 2021 at 13:23 | Report abuse | Reply
  33. rv repair service

    I used to be able to find good info from your blog articles.


    May 8, 2021 at 14:12 | Report abuse | Reply
  34. Digital Marketing Service

    I like looking through an article that will make people think. Also, thanks for allowing for me to comment!


    May 8, 2021 at 14:59 | Report abuse | Reply
  35. Local Marketing Services


    May 8, 2021 at 20:43 | Report abuse | Reply
  36. Digital Marketing Agency California


    May 8, 2021 at 23:18 | Report abuse | Reply
  37. Social Media Marketing Master


    May 9, 2021 at 00:38 | Report abuse | Reply
  38. Social Media Marketing Firms Near Me

    Hi, I do believe this is a great site. I stumbledupon it 😉 I'm going to come back once again since I bookmarked it. Money and freedom is the best way to change, may you be rich and continue to guide other people.


    May 9, 2021 at 01:51 | Report abuse | Reply
  39. Local Marketing Consultant


    May 9, 2021 at 07:32 | Report abuse | Reply
  40. RV Bathroom Los Angeles

    That is a great tip particularly to those new to the blogosphere. Brief but very precise info… Thank you for sharing this one. A must read article!


    May 9, 2021 at 09:25 | Report abuse | Reply
  41. Content Marketing Irvine


    May 9, 2021 at 11:05 | Report abuse | Reply
  42. Social Media Marketing Agency Near Me

    An impressive share! I've just forwarded this onto a friend who was conducting a little research on this. And he actually bought me lunch due to the fact that I stumbled upon it for him... lol. So allow me to reword this.... Thanks for the meal!! But yeah, thanks for spending time to discuss this subject here on your web site.


    May 9, 2021 at 12:11 | Report abuse | Reply
  43. Digital Marketing Consultants


    May 9, 2021 at 12:31 | Report abuse | Reply
  44. Internet Marketing Videos


    May 9, 2021 at 13:53 | Report abuse | Reply
  45. Video Marketing Store


    May 9, 2021 at 15:28 | Report abuse | Reply
  46. Internet Marketing Mentors


    May 9, 2021 at 19:37 | Report abuse | Reply
  47. Internet Marketing Consultant

    Hi, I do believe this is an excellent web site. I stumbledupon it 😉 I may revisit once again since i have book-marked it. Money and freedom is the greatest way to change, may you be rich and continue to help others.


    May 9, 2021 at 20:19 | Report abuse | Reply
  48. Internet Marketing Companies

    I love reading an article that can make people think. Also, thanks for permitting me to comment!


    May 9, 2021 at 21:37 | Report abuse | Reply
  49. RV Mechanics California

    Greetings! Very helpful advice in this particular article! It's the little changes that make the largest changes. Thanks for sharing!


    May 9, 2021 at 22:40 | Report abuse | Reply
  50. Content Marketing Mentor


    May 9, 2021 at 22:48 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Leave a Reply to arbor care tree service Southern Gardens Phoenix, AZ


CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.