Antioxidants in coffee, tea may not help prevent dementia, stroke
February 20th, 2013
05:04 PM ET

Antioxidants in coffee, tea may not help prevent dementia, stroke

Drinking coffee and tea rich in antioxidants may not lower your risk of dementia or having a stroke, according to a new study published Wednesday in the online journal Neurology.

The study may call into question other research suggesting a diet high in antioxidants helps reduce the risk of dementia and stroke.

Researchers followed approximately 5,400 people aged 55 years and older for nearly 14 years. The participants had no signs of dementia when they began the study and most had never had a stroke. They were questioned about how often they ate 170 foods over the course of the past year and they were divided into three groups based on the levels of antioxidants in their diet - low, moderate or high.

Antioxidants are vitamins, minerals and other nutrients that help protect your cells and repair cell damage caused by free radicals. Free radicals, molecules responsible for aging and tissue damage, may be a factor in heart disease, cancer and other disease.

Foods loaded with antioxidants include blueberries, strawberries and raspberries, tomatoes, kale, bell peppers, corn, and spinach. The major antioxidant vitamins are Vitamin C, beta-carotene and Vitamin E. They're largely found in colorful fruits and veggies, especially those that are red, blue, purple, yellow and orange in color.

But most of the antioxidants consumed by study participants came in the form of coffee and tea, said study author Elizabeth Devore of Harvard Medical School and Erasmus Medical Center in Rotterdam, Netherlands.

Approximately 600 people developed dementia and about 600 had a stroke over the course of the study. But those who consumed antixoidant-rich diets did not change their risk of developing brain disease any more than those with low levels in their diets, researchers said.

"These results are interesting because other studies have suggested that antioxidants may help protect against stroke and dementia," said Devore. "It's possible that individual antioxidants, or the main foods that contribute those antioxidants - rather than the total antioxidant level in the diet - contribute to the lower risk of dementia and stroke found in earlier studies."

Dr. Richard Lipton, vice chairman of neurology at Albert Einstein College of Medicine says people tend to think antioxidants are called one thing and all have the same properties. But the paper is clear that 90% of the antioxidants came from coffee and tea and that doesn't have the same protective effect.

"This study is not saying that blueberries don't help you or a Mediterranean diet doesn't help you, it's saying this very specific dietary component doesn't reduce stroke and dementia risk." Lipton told CNN. "This study looked at a certain type of antioxidants primarily from coffee and tea and doesn't speak to antioxidants in fruits and vegetables and the Mediterranean diet."

In fact, the researchers say there is growing evidence that consuming lots of fruits, vegetables and even alcoholic beverages may be linked to a reduced risk of stroke - that specific antioxidant-rich foods and beverages are more important for lowering the risk of stoke than the overall antioxidant capacity of the diet.

soundoff (697 Responses)
  1. Gary Pexton

    Great article! We will be linking to this particularly great article on our website. Keep up the good writing.


    June 10, 2021 at 13:55 | Report abuse | Reply
  2. Tamar Mannick

    An outstanding share! I have just forwarded this onto a coworker who had been doing a little homework on this. And he actually ordered me breakfast due to the fact that I stumbled upon it for him... lol. So let me reword this.... Thank YOU for the meal!! But yeah, thanks for spending time to discuss this matter here on your site.


    June 10, 2021 at 19:54 | Report abuse | Reply
  3. Mohammad Maione


    June 10, 2021 at 23:58 | Report abuse | Reply
  4. Sammie Cassese


    June 11, 2021 at 00:49 | Report abuse | Reply
  5. Jerold Cassler

    I need to to thank you for this great read!! I definitely enjoyed every bit of it. I've got you book marked to check out new things you postÖ


    June 11, 2021 at 00:49 | Report abuse | Reply
  6. Cristy Dicicco


    June 11, 2021 at 03:18 | Report abuse | Reply
  7. rv repair near me


    June 11, 2021 at 07:54 | Report abuse | Reply
  8. Jae Mahar

    This website truly has all of the information and facts I needed concerning this subject and didnít know who to ask.


    June 11, 2021 at 10:27 | Report abuse | Reply
  9. Manuel Friederich

    An outstanding share! I have just forwarded this onto a colleague who was conducting a little research on this. And he actually ordered me breakfast due to the fact that I found it for him... lol. So allow me to reword this.... Thanks for the meal!! But yeah, thanks for spending some time to talk about this subject here on your web page.


    June 11, 2021 at 10:36 | Report abuse | Reply
  10. near me

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


    June 11, 2021 at 17:05 | Report abuse | Reply
  11. rv restore and repair

    You need to take part in a contest for one of the most useful sites on the internet. I will recommend this blog!


    June 11, 2021 at 17:11 | Report abuse | Reply
  12. RV Repair Orange County


    June 11, 2021 at 22:20 | Report abuse | Reply
  13. Courier Van Repair Shop

    The very next time I read a blog, Hopefully it doesn't disappoint me just as much as this one. After all, Yes, it was my choice to read, however I truly thought you would have something useful to talk about. All I hear is a bunch of crying about something that you could fix if you weren't too busy searching for attention.


    June 11, 2021 at 22:20 | Report abuse | Reply
  14. Sprinter Van Mechanic

    Your style is so unique compared to other folks I have read stuff from. Thanks for posting when you have the opportunity, Guess I'll just book mark this web site.


    June 11, 2021 at 22:32 | Report abuse | Reply
  15. Camping World RV Repair

    After looking at a few of the blog articles on your web site, I honestly like your technique of writing a blog. I book-marked it to my bookmark site list and will be checking back in the near future. Take a look at my web site too and let me know your opinion.


    June 12, 2021 at 00:02 | Report abuse | Reply
  16. orange rv

    I wanted to thank you for this fantastic read!! I absolutely loved every little bit of it. I have got you book marked to check out new things you postÖ


    June 12, 2021 at 00:38 | Report abuse | Reply
  17. awnings orange county


    June 12, 2021 at 08:14 | Report abuse | Reply
  18. RV Blinds Riverside

    Hello there! This article couldnít be written any better! Going through this article reminds me of my previous roommate! He always kept talking about this. I am going to forward this article to him. Fairly certain he'll have a very good read. Thank you for sharing!


    June 12, 2021 at 09:30 | Report abuse | Reply
  19. Sprinter Van Conversion Shop

    I enjoy looking through an article that can make men and women think. Also, many thanks for permitting me to comment!


    June 12, 2021 at 09:30 | Report abuse | Reply
  20. Class A RV Repairs

    This page definitely has all of the information and facts I needed about this subject and didnít know who to ask.


    June 12, 2021 at 09:56 | Report abuse | Reply
  21. Roof Mounted A/C Leak Repair On Sprinter Van

    You're so awesome! I don't suppose I have read through anything like this before. So wonderful to discover somebody with some original thoughts on this issue. Really.. thanks for starting this up. This web site is one thing that is required on the web, someone with a bit of originality!


    June 12, 2021 at 10:26 | Report abuse | Reply
  22. great clips near me


    June 12, 2021 at 16:14 | Report abuse | Reply
  23. best eliquid

    I think this is one of the most important information for me.
    And i'm glad reading your article. But wanna remark on some general things, The site style is perfect,
    the articles is really great : D. Good job, cheers

    June 12, 2021 at 17:54 | Report abuse | Reply
  24. dmv near me

    Very good post. I will be dealing with some of these issues as well..


    June 12, 2021 at 18:10 | Report abuse | Reply
  25. things to do near me


    June 12, 2021 at 21:08 | Report abuse | Reply
  26. eye doctors near me


    June 13, 2021 at 03:59 | Report abuse | Reply
  27. tire repair near me

    Excellent article! We are linking to this particularly great article on our site. Keep up the great writing.


    June 13, 2021 at 07:31 | Report abuse | Reply
  28. car audio near me


    June 13, 2021 at 08:13 | Report abuse | Reply
  29. horseback riding near me


    June 13, 2021 at 08:31 | Report abuse | Reply
  30. covid 19 testing near me

    An interesting discussion is worth comment. I do think that you need to write more about this subject matter, it may not be a taboo matter but generally people don't speak about such topics. To the next! Cheers!!


    June 13, 2021 at 09:27 | Report abuse | Reply
  31. pasta near me


    June 13, 2021 at 11:03 | Report abuse | Reply
  32. drive in theater near me


    June 13, 2021 at 13:53 | Report abuse | Reply
  33. food banks near me


    June 13, 2021 at 14:40 | Report abuse | Reply
  34. olive garden near me

    Howdy, I believe your website could possibly be having internet browser compatibility problems. Whenever I take a look at your website in Safari, it looks fine but when opening in IE, it has some overlapping issues. I simply wanted to provide you with a quick heads up! Besides that, fantastic blog!


    June 13, 2021 at 15:23 | Report abuse | Reply
  35. liquor near me

    Next time I read a blog, Hopefully it won't disappoint me as much as this one. After all, I know it was my choice to read, nonetheless I truly believed you would have something helpful to talk about. All I hear is a bunch of crying about something you could fix if you were not too busy looking for attention.


    June 13, 2021 at 16:24 | Report abuse | Reply
  36. Mayra Arnette

    I don't know about you people but I infatuated with airplanes. I had a friend in highschool that loves airplanes, so here are some airplane related stuff I don't know about you guys but I love airplanes. I had a friend in highschool that loved airplanes, so here are some airplane related stuff https://www.airlinereporter.com/2011/02/photo-boeing-747-8-intercontinental-outside-at-paine-field/


    June 14, 2021 at 00:26 | Report abuse | Reply
  37. recreational dispensary near me


    June 14, 2021 at 02:30 | Report abuse | Reply
  38. mexican restaurant near me


    June 14, 2021 at 05:52 | Report abuse | Reply
  39. qdoba near me


    June 14, 2021 at 06:46 | Report abuse | Reply
  40. soul food near me

    Oh my goodness! Awesome article dude! Thank you, However I am having difficulties with your RSS. I donít understand why I cannot subscribe to it. Is there anybody having the same RSS problems? Anybody who knows the answer can you kindly respond? Thanx!!


    June 14, 2021 at 06:55 | Report abuse | Reply
  41. drive thru covid testing near me


    June 14, 2021 at 11:51 | Report abuse | Reply
  42. sporting goods near me

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


    June 14, 2021 at 11:58 | Report abuse | Reply
  43. food lion near me

    This website really has all the info I wanted concerning this subject and didnít know who to ask.


    June 14, 2021 at 13:52 | Report abuse | Reply
  44. private schools near me

    Way cool! Some very valid points! I appreciate you penning this write-up and also the rest of the website is really good.


    June 14, 2021 at 14:19 | Report abuse | Reply
  45. pawn shop near me

    That is a very good tip particularly to those new to the blogosphere. Brief but very accurate infoÖ Thank you for sharing this one. A must read post!


    June 14, 2021 at 14:34 | Report abuse | Reply
  46. outback steakhouse near me

    I quite like reading an article that will make people think. Also, thank you for allowing me to comment!


    June 14, 2021 at 15:35 | Report abuse | Reply
  47. mexican near me

    Hi, I do think this is a great web site. I stumbledupon it 😉 I may return 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.


    June 14, 2021 at 17:11 | Report abuse | Reply
  48. subway near me

    Hey there! I just would like to give you a big thumbs up for your excellent info you've got right here on this post. I'll be coming back to your website for more soon.


    June 14, 2021 at 18:52 | Report abuse | Reply
  49. RV Repairs Near Me

    Aw, this was an extremely good post. Finding the time and actual effort to make a good articleÖ but what can I sayÖ I put things off a whole lot and never manage to get anything done.


    June 15, 2021 at 01:01 | Report abuse | Reply
  50. Sprinter Repair Shop Near Me


    June 15, 2021 at 04:24 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Leave a Reply to Camper Repair Near Me


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.