Green tea can be harmful in large quantities...
Started by girl-WITHOUT-acne, May 06 2007 11:17 AM
10 replies to this topic
#1
Posted 06 May 2007 - 11:17 AM
http://www.newscientist.com/article/dn1178...quantities.html
* 10:00 05 May 2007
* From New Scientist Print Edition. Subscribe and get 4 free issues.
* Chung Yang, Rutgers University
Green tea is good for you, but only if drunk in moderation. While the polyphenols in green tea are credited with preventing heart disease and cancer, it seems they can cause liver and kidney damage if consumed in very large quantities, a review of studies into the toxicity of polyphenols has shown.
"People shouldn't be too alarmed by this, but those taking supplements may experience problems," says lead author Chung Yang of Rutgers, the State University of New Jersey.
He stresses that up to 10 small cups of green tea a day is fine. Problems are likely in people who take supplements, which can contain up to 50 times as much polyphenol as a single cup of tea.
Yang's review cites experiments in which rodents and dogs died from liver poisoning when given very large doses of polyphenols. He also reports cases of people with liver toxicity after overdosing on green-tea-based supplements. Their symptoms disappeared when they stopped taking the pills, only to return when they started taking them again (Chemical Research in Toxicology, vol 20, p 583).
* 10:00 05 May 2007
* From New Scientist Print Edition. Subscribe and get 4 free issues.
* Chung Yang, Rutgers University
Green tea is good for you, but only if drunk in moderation. While the polyphenols in green tea are credited with preventing heart disease and cancer, it seems they can cause liver and kidney damage if consumed in very large quantities, a review of studies into the toxicity of polyphenols has shown.
"People shouldn't be too alarmed by this, but those taking supplements may experience problems," says lead author Chung Yang of Rutgers, the State University of New Jersey.
He stresses that up to 10 small cups of green tea a day is fine. Problems are likely in people who take supplements, which can contain up to 50 times as much polyphenol as a single cup of tea.
Yang's review cites experiments in which rodents and dogs died from liver poisoning when given very large doses of polyphenols. He also reports cases of people with liver toxicity after overdosing on green-tea-based supplements. Their symptoms disappeared when they stopped taking the pills, only to return when they started taking them again (Chemical Research in Toxicology, vol 20, p 583).
#2
Posted 06 May 2007 - 12:57 PM
so stick to a few hot cups of actual green tea, a lot more relaxing than popping pills
#3
Posted 06 May 2007 - 01:14 PM
imo u can find a pro/con in almost anything! moderation is key is the best advice like always.
#4
Posted 06 May 2007 - 01:18 PM
I'm going to copy and paste my reply from the other thread
My mom showed me this article today, after looking at it was one of those "scare tactic" articles. There was another article similar to that as well.
So here's the drift. they say 10 cups worth is fine. So to understand how much (in pill form) 10 cups is, we must know how much is in each pill.
QUOTE
http://www.nowfoods.com/?action=itemdetail&item_id=42902
AMOUNT TO USE: One or more Vcaps® a day, preferably with meals. Three to four capsules would provide about the same antioxidant benefits as ten cups of tea, an amount used successfully in some studies.
Each pill has 400 mg, and 1.6 grams to 2 grams = 10 cups worth. So 50 cups worth is almost impossible to attain.
50 cups of water would probably kill someone too. =)
So the moral of the story is
1) understand what articles say
2) don't drink enough liquids to kill yourself
If you follow that, you'll be fine.
My mom showed me this article today, after looking at it was one of those "scare tactic" articles. There was another article similar to that as well.
So here's the drift. they say 10 cups worth is fine. So to understand how much (in pill form) 10 cups is, we must know how much is in each pill.
QUOTE
http://www.nowfoods.com/?action=itemdetail&item_id=42902
AMOUNT TO USE: One or more Vcaps® a day, preferably with meals. Three to four capsules would provide about the same antioxidant benefits as ten cups of tea, an amount used successfully in some studies.
Each pill has 400 mg, and 1.6 grams to 2 grams = 10 cups worth. So 50 cups worth is almost impossible to attain.
50 cups of water would probably kill someone too. =)
So the moral of the story is
1) understand what articles say
2) don't drink enough liquids to kill yourself
If you follow that, you'll be fine.
#5
Posted 06 May 2007 - 01:20 PM
ur right u can die by drinking too much water u know lol! check it out.
#6
Posted 06 May 2007 - 01:25 PM
ur right u can die by drinking too much water u know lol! check it out.
http://www.ncbi.nlm.nih.gov/entrez/query.f...p;dopt=Abstract
Bingo.
#7
Posted 06 May 2007 - 01:40 PM
If you drink enough Green Tea to kill yourself....
You've got talent.
You've got talent.
#8
Posted 06 May 2007 - 01:46 PM
Honest tho you would need alot of pills to do damage imo. Aslong as u not chomping 20+ per day and ur not allergic then I think your fine. Im up to 1900MG per day and for me its powerful stuff even causing breakouts ( i think its these but not 100% sure yet) but my body fat is getting very low! ask Jewel
#9
Posted 07 May 2007 - 03:51 AM
Honest tho you would need alot of pills to do damage imo. Aslong as u not chomping 20+ per day and ur not allergic then I think your fine. Im up to 1900MG per day and for me its powerful stuff even causing breakouts ( i think its these but not 100% sure yet) but my body fat is getting very low! ask Jewel 
OMG you guys scared me...I was taking 6 300mg pills a day..Now I take 2....I guess it's better now is it??
#10
Posted 07 May 2007 - 03:58 AM
yea ive got liver problems and the doc asked me bout me drinkin green tea and wen i said i was drinkin like 6-7 cups a day he was like noooooooooooooooooo dont do that coz it'll make my situation worse..i was like oh..i thought i was helping myself lol he said stick to no more than 2 cups a day
#11
Posted 07 May 2007 - 07:36 AM
I'm down to about 24 oz of tea with I think is like..6 cups of tea so I'm good..I use to drink 12 8oz cups of green tea!
Thanks for sharing that info.
Thanks for sharing that info.
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