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. Path Goal Theory Of Leadership


    June 27, 2021 at 11:42 | Report abuse | Reply
  2. Styles Of Leadership

    Hi, I do think this is an excellent blog. I stumbledupon it 😉 I am going to revisit once again since I book marked it. Money and freedom is the greatest way to change, may you be rich and continue to help others.


    June 27, 2021 at 11:58 | Report abuse | Reply
  3. RV Repair Near My Location


    June 27, 2021 at 15:07 | Report abuse | Reply
  4. Van Upgrades Shop

    I really like it when folks get together and share ideas. Great blog, keep it up!


    June 27, 2021 at 22:09 | Report abuse | Reply
  5. Prestige Collision Sprinter Repair Mission Viejo

    Iím impressed, I have to admit. Seldom do I encounter a blog thatís both equally educative and amusing, and let me tell you, you've hit the nail on the head. The problem is something that not enough men and women are speaking intelligently about. Now i'm very happy that I came across this during my hunt for something concerning this.


    June 27, 2021 at 23:19 | Report abuse | Reply
  6. 2011 Mercedes Sprinter Rv Repair


    June 28, 2021 at 05:53 | Report abuse | Reply
  7. RV Repair Shop Near My Location


    June 28, 2021 at 08:02 | Report abuse | Reply
  8. RV Repair Around Me

    Hello there, There's no doubt that your web site might be having internet browser compatibility issues. When I look at your blog in Safari, it looks fine however, when opening in IE, it's got some overlapping issues. I just wanted to give you a quick heads up! Other than that, fantastic site!


    June 28, 2021 at 08:17 | Report abuse | Reply
  9. RV Repairs Near My Location

    After I originally commented I seem to have clicked on the -Notify me when new comments are added- checkbox and from now on every time a comment is added I get 4 emails with the same comment. Perhaps there is a way you are able to remove me from that service? Many thanks!


    June 28, 2021 at 11:54 | Report abuse | Reply
  10. RV Repair Huntington Beach


    June 28, 2021 at 13:07 | Report abuse | Reply
  11. RV Repair Shop Near Me

    Oh my goodness! Amazing article dude! Thank you so much, However I am encountering difficulties with your RSS. I donít understand why I can't join it. Is there anybody else having similar RSS issues? Anybody who knows the answer will you kindly respond? Thanks!!


    June 28, 2021 at 18:11 | Report abuse | Reply
  12. Keystone Sprinter Tank Repair Leaking


    June 28, 2021 at 18:14 | Report abuse | Reply
  13. RV Repair Shop Near Me


    June 28, 2021 at 18:44 | Report abuse | Reply
  14. Mercedes Benz Sprinter Repair


    June 28, 2021 at 19:46 | Report abuse | Reply
  15. RV Repair Places Near Me

    Good blog you have got here.. Itís difficult to find excellent writing like yours these days. I really appreciate individuals like you! Take care!!


    June 28, 2021 at 19:47 | Report abuse | Reply
  16. Gmc High Top Van Repair Shop Near Me


    June 28, 2021 at 20:03 | Report abuse | Reply
  17. Camper Repair Shops Near Me


    June 28, 2021 at 20:28 | Report abuse | Reply
  18. Sprinter Repair Shops Near Me

    You made some decent points there. I checked on the web for more information about the issue and found most individuals will go along with your views on this web site.


    June 28, 2021 at 23:20 | Report abuse | Reply
  19. RV Repair Near My Location

    Way cool! Some extremely valid points! I appreciate you penning this post plus the rest of the site is very good.


    June 29, 2021 at 01:00 | Report abuse | Reply
  20. Sprinter Repair Orange County

    I needed to thank you for this good read!! I certainly enjoyed every bit of it. I've got you saved as a favorite to check out new things you postÖ


    June 29, 2021 at 01:51 | Report abuse | Reply
  21. RV Repair Places Near Me


    June 29, 2021 at 02:45 | Report abuse | Reply
  22. Rv Wrap Shop

    Greetings! Very useful advice in this particular article! It is the little changes that make the greatest changes. Many thanks for sharing!


    June 29, 2021 at 03:44 | Report abuse | Reply
  23. RV Repair Shops Near Me


    June 29, 2021 at 04:44 | Report abuse | Reply
  24. Camper Repair Places Near Me


    June 29, 2021 at 06:15 | Report abuse | Reply
  25. RV Repair Garden Grove


    June 29, 2021 at 07:37 | Report abuse | Reply
  26. Business Van Repair Shop Near Me


    June 29, 2021 at 10:35 | Report abuse | Reply
  27. RV Repair Shops Near Me Now


    June 29, 2021 at 10:43 | Report abuse | Reply
  28. RV Repair Shops Near My Location

    This is a topic which is close to my heart... Best wishes! Where are your contact details though?


    June 29, 2021 at 12:58 | Report abuse | Reply
  29. https://thuocladientu123.com

    Best view i have ever seen !


    June 29, 2021 at 17:16 | Report abuse | Reply
  30. RV Repair Orange County California


    June 29, 2021 at 18:45 | Report abuse | Reply
  31. Sprinter Alignent Repair

    Iím impressed, I must say. Seldom do I encounter a blog thatís both equally educative and interesting, and without a doubt, you have hit the nail on the head. The issue is an issue that too few folks are speaking intelligently about. I'm very happy that I found this in my hunt for something regarding this.


    June 29, 2021 at 18:49 | Report abuse | Reply
  32. RV Repairs Near My Location


    June 29, 2021 at 19:26 | Report abuse | Reply
  33. Ram Van Frame Repair


    June 29, 2021 at 20:24 | Report abuse | Reply
  34. RV Repair Shop


    June 29, 2021 at 20:38 | Report abuse | Reply
  35. RV Repair Places Near Me


    June 29, 2021 at 21:26 | Report abuse | Reply
  36. RV Repair Orange County

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


    June 30, 2021 at 00:44 | Report abuse | Reply
  37. RV Repair Orange County

    Hi, I do think this is a great blog. I stumbledupon it 😉 I may come back once again since I saved as a favorite it. Money and freedom is the best way to change, may you be rich and continue to help others.


    June 30, 2021 at 02:41 | Report abuse | Reply
  38. RV Repair Near My Location

    After I originally commented I appear to have clicked on the -Notify me when new comments are added- checkbox and from now on whenever a comment is added I get 4 emails with the same comment. Is there a means you are able to remove me from that service? Thanks!


    June 30, 2021 at 03:34 | Report abuse | Reply
  39. RV Repair Huntington Beach

    Excellent blog you have here.. Itís difficult to find quality writing like yours nowadays. I seriously appreciate individuals like you! Take care!!


    June 30, 2021 at 03:42 | Report abuse | Reply
  40. Utility Van Repair


    June 30, 2021 at 05:41 | Report abuse | Reply
  41. Sprinter Repair Costa Mesa


    June 30, 2021 at 05:47 | Report abuse | Reply
  42. RV Repair Nearby


    June 30, 2021 at 07:24 | Report abuse | Reply
  43. Nearest RV Repair

    Itís nearly impossible to find well-informed people in this particular topic, however, you seem like you know what youíre talking about! Thanks


    June 30, 2021 at 08:51 | Report abuse | Reply
  44. RV Repairs Nearby


    June 30, 2021 at 10:36 | Report abuse | Reply
  45. Van Conversion

    Excellent post. I'm experiencing a few of these issues as well..


    June 30, 2021 at 13:27 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Leave a Reply to rv refurbishing business


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.