A friend of mine mentioned that green tea inhibits absorption of vital nutrients and I should consume it sparingly... anybody know anything about this?
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green tea inhibits absorption?
Started by
mrak1979
, Mar 24 2006 02:56 AM
13 replies to this topic
#3
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Posted 24 March 2006 - 05:48 AM
A friend of mine mentioned that green tea inhibits absorption of vital nutrients and I should consume it sparingly... anybody know anything about this?
That is the reason AOR chose not to put green tea on their multis, unlike LEF.
http://www.imminst.o...t=0
http://www.imminst.o...t=0
Read the posts by AORsupport, there is even references to studies.
#4
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Posted 24 March 2006 - 06:14 AM
About tea, it is a good source of Manganese and Potassium, there has been studies, that tea contains a very strong antioxidant, Epigallocatechin, and flavonoids that helps increase bone mass density, also, tea contains polyphenols, which supress oxidation of low density lipoproteins, wich is an step involved in the pathogenesis of Artherosclerosis.
Green Tea compounds helps protect damage to DNAS caused by tobacco, it is also antinflamatory
on the other hand, tea contains high amounts of Fluoride, wich it has been demonstrated that its accumulation causes osteosarcoma and uterine cancer, among other maladies
Green Tea compounds helps protect damage to DNAS caused by tobacco, it is also antinflamatory
on the other hand, tea contains high amounts of Fluoride, wich it has been demonstrated that its accumulation causes osteosarcoma and uterine cancer, among other maladies
#5
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Posted 24 March 2006 - 06:36 AM
About tea, it is a good source of Manganese and Potassium, there has been studies, that tea contains a very strong antioxidant, Epigallocatechin, and flavonoids that helps increase bone mass density, also, tea contains polyphenols, which supress oxidation of low density lipoproteins, wich is an step involved in the pathogenesis of Artherosclerosis.
Green Tea compounds helps protect damage to DNAS caused by tobacco, it is also antinflamatory
on the other hand, tea contains high amounts of Fluoride, wich it has been demonstrated that its accumulation causes osteosarcoma and uterine cancer, among other maladies
Great. But it still inhibits absorbation of other vitamins and minerals.
#7
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Posted 24 March 2006 - 06:34 PM
people have been drinking green tea, sometimes to excess for thousands of years. i very very very much doubt that a few cups of green tea per day is gonna cause any problems or inhibit mineral absorbtion on a level large enough to even be a concern.
#8
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Posted 24 March 2006 - 06:43 PM
Maybe I should reconsider drinking (green or black) tea with food.
I do this because of the healthy substances it provides and the fact that it’s better for digestion to drink hot or warm beverages (compared to cold water) while eating.
I do this because of the healthy substances it provides and the fact that it’s better for digestion to drink hot or warm beverages (compared to cold water) while eating.
#9
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Posted 25 March 2006 - 05:42 PM
AJANAST4R: It will and does causes pronblems, please read on :
About tea, it is a good source of Manganese and Potassium, there has been studies, that tea contains a very strong antioxidant, Epigallocatechin, and flavonoids that helps increase bone mass density, also, tea contains polyphenols, which supress oxidation of low density lipoproteins, wich is an step involved in the pathogenesis of Artherosclerosis.
Green Tea compounds helps protect damage to DNAS caused by tobacco, it is also antinflamatory
on the other hand, tea contains high amounts of Fluoride, wich it has been demonstrated that its accumulation causes osteosarcoma and uterine cancer, among other maladies
While there can be no doubt as to the beneficial effects of individual antioxidants found in green tea, the same cannot be said about green tea as a beverage. The studies that you mention concentrate on epigallocatechin gallate (EGCG) wich with other polyphenols are constituents of tea - especially of green tea, but , however, no studies exist investigating the effects of fluorides on these anti-oxidants and there lies the reason why they are trying to separate EGCG from green teas
Existing studies involving other antioxidants and fluoride compounds give evidence that fluorides can adversely affect the action of antioxidants. Isolated antioxidants may slow down the development of some forms of cancer in experimental studies, but their effect may be annihilated in their complex natural environment (as a sum of the action of all the substances present).
Available data seem undecided in their conclusions as to the inhibition of carcinogenesis in experimental animals by tea or tea compounds. It is suggested "at most a modest benefit, since there is considerable international variation in tea consumption but generally small differences in cancer rates...More relevant case-control and cohort studies show mixed results."
Other epidemiological and human studies have also shown varying results. In a review by Dr.Bushman thirty-one human studies and four reviews were examined. Among five studies reporting on colon cancer, three found an inverse association and one reported a positive association.
For rectal cancer, only one of four studies reported an inverse association; increased risks were seen in two of the studies. An inverse association was suggested for urinary bladder cancer in two of two studies.
While lung cancer studies have shown an inverse effect with Okinawan tea, a tentatively increased risk was shown in another study, clearly indicating that more research into this matter is needed. In a recent study on Finnish men, published in 1998 by Terryl Hartman and others, again a positive correlation between colon cancer and tea intake was found. Colon cancer occurrence increased with higher intake.
Many available green tea/cancer studies last only a few months, and do not take into account the cumulative effects of fluoride, which is a known cancer promoter, and has the ability to transform healthy cells into cancerous ones. For any conclusive evidence to be obtained this must be considered, for long time fluoride ingestion has been shown to _cause_ cancer, especially osteosarcomas and uterine cancer.
Dean Burk, for many decades Chief Chemist at the National Cancer Institute, testified at congressional hearings in 1981 stating that over 40,000 cancer deaths in that year were attributable to fluoridation . He has said that no chemical causes as much cancer, and faster, than fluorides. Public health officials are quick to say that this data is not verified, which is entirely untrue, for international research as well as congressional hearings and court proceedings HAVE verified this information. Dental fluorosis (mottled teeth) is the first visible sign of fluoride poisoning.
About tea, it is a good source of Manganese and Potassium, there has been studies, that tea contains a very strong antioxidant, Epigallocatechin, and flavonoids that helps increase bone mass density, also, tea contains polyphenols, which supress oxidation of low density lipoproteins, wich is an step involved in the pathogenesis of Artherosclerosis.
Green Tea compounds helps protect damage to DNAS caused by tobacco, it is also antinflamatory
on the other hand, tea contains high amounts of Fluoride, wich it has been demonstrated that its accumulation causes osteosarcoma and uterine cancer, among other maladies
While there can be no doubt as to the beneficial effects of individual antioxidants found in green tea, the same cannot be said about green tea as a beverage. The studies that you mention concentrate on epigallocatechin gallate (EGCG) wich with other polyphenols are constituents of tea - especially of green tea, but , however, no studies exist investigating the effects of fluorides on these anti-oxidants and there lies the reason why they are trying to separate EGCG from green teas
Existing studies involving other antioxidants and fluoride compounds give evidence that fluorides can adversely affect the action of antioxidants. Isolated antioxidants may slow down the development of some forms of cancer in experimental studies, but their effect may be annihilated in their complex natural environment (as a sum of the action of all the substances present).
Available data seem undecided in their conclusions as to the inhibition of carcinogenesis in experimental animals by tea or tea compounds. It is suggested "at most a modest benefit, since there is considerable international variation in tea consumption but generally small differences in cancer rates...More relevant case-control and cohort studies show mixed results."
Other epidemiological and human studies have also shown varying results. In a review by Dr.Bushman thirty-one human studies and four reviews were examined. Among five studies reporting on colon cancer, three found an inverse association and one reported a positive association.
For rectal cancer, only one of four studies reported an inverse association; increased risks were seen in two of the studies. An inverse association was suggested for urinary bladder cancer in two of two studies.
While lung cancer studies have shown an inverse effect with Okinawan tea, a tentatively increased risk was shown in another study, clearly indicating that more research into this matter is needed. In a recent study on Finnish men, published in 1998 by Terryl Hartman and others, again a positive correlation between colon cancer and tea intake was found. Colon cancer occurrence increased with higher intake.
Many available green tea/cancer studies last only a few months, and do not take into account the cumulative effects of fluoride, which is a known cancer promoter, and has the ability to transform healthy cells into cancerous ones. For any conclusive evidence to be obtained this must be considered, for long time fluoride ingestion has been shown to _cause_ cancer, especially osteosarcomas and uterine cancer.
Dean Burk, for many decades Chief Chemist at the National Cancer Institute, testified at congressional hearings in 1981 stating that over 40,000 cancer deaths in that year were attributable to fluoridation . He has said that no chemical causes as much cancer, and faster, than fluorides. Public health officials are quick to say that this data is not verified, which is entirely untrue, for international research as well as congressional hearings and court proceedings HAVE verified this information. Dental fluorosis (mottled teeth) is the first visible sign of fluoride poisoning.
#10
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Posted 25 March 2006 - 09:31 PM
opales:
brainbox:
I always assumed that since tea was a diuretic that it would best be avoided during consumption with meals. This would be based in the sense that a diuretic causes an increase in rate of bodily enveloped fluids to be expelled thus leaving tissue either on the whole or focally less hydrated than before which could imply that the intestinal tissue which the tea makes contact with becomes less capable of digestion...but perhaps it increases digestion to extract water from food to replenish diuretically compromised hydration levels. Hm...I'll have to learn about that. From personal experience, extra liquids about meals makes for less than efficient digestability.
simple:
Please refrain from posting text wholesale without the link from which it was plucked. [edit] Please post the link of origin for copy/pasted texts so we can make some loving judgement about the credibility and bias of the writer.
That's probably why all the advice I've heard about green tea extract emphasizes that it be taken on an empty stomach. I wonder how long this assimilation dampening effect keeps hold after green tea or GTextract are consumed?Great. But it still inhibits absorbation of other vitamins and minerals.
brainbox:
I always assumed that since tea was a diuretic that it would best be avoided during consumption with meals. This would be based in the sense that a diuretic causes an increase in rate of bodily enveloped fluids to be expelled thus leaving tissue either on the whole or focally less hydrated than before which could imply that the intestinal tissue which the tea makes contact with becomes less capable of digestion...but perhaps it increases digestion to extract water from food to replenish diuretically compromised hydration levels. Hm...I'll have to learn about that. From personal experience, extra liquids about meals makes for less than efficient digestability.
simple:
Please refrain from posting text wholesale without the link from which it was plucked. [edit] Please post the link of origin for copy/pasted texts so we can make some loving judgement about the credibility and bias of the writer.
Edited by liplex, 25 March 2006 - 09:42 PM.
#14
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Posted 27 March 2006 - 03:37 PM
Inhibitors of non-haem iron absorption include polyphenols (from tea, vegetables, legumes and condiments), phyates (from cereals, nuts and legumes), the dietary fibre complex (wheat), calcium and phosphorus (New Zealand Department of Health 1991).
When I was studying nutrition at university there were many WTF! days. The issue of green tea and other things inhibiting iron absorption was definetly one of them. I am a vegetarian so I this was initially an issue. At the end of the day I stopped saying WTF in anger and said WTF and threw my hands in the air as in to say "Whatever"
I enjoy green tea but I don't think I have ever thought to myself "Hmmm, I enjoy iron". These days, whilst I still do my best to maintain a healthy lifestyle, I am less of a perfectionist and try to focus on my quality of life more. Not to say that you can't be a perfectionist and have quality of life at the same time.
All that said, I do tend to enjoy my freshly brewed green tea as soon as I wake with my supplements. Recently I have been drinking long jing (dragonwell) or silver tip.
All we need know is for someone to say that water dilutes the effects of the freshly brewed green tea.
Eating food functionally these days is like trying to solve a 5 x 5 rubiks cube.
Enjoy [lol]
When I was studying nutrition at university there were many WTF! days. The issue of green tea and other things inhibiting iron absorption was definetly one of them. I am a vegetarian so I this was initially an issue. At the end of the day I stopped saying WTF in anger and said WTF and threw my hands in the air as in to say "Whatever"
I enjoy green tea but I don't think I have ever thought to myself "Hmmm, I enjoy iron". These days, whilst I still do my best to maintain a healthy lifestyle, I am less of a perfectionist and try to focus on my quality of life more. Not to say that you can't be a perfectionist and have quality of life at the same time.
All that said, I do tend to enjoy my freshly brewed green tea as soon as I wake with my supplements. Recently I have been drinking long jing (dragonwell) or silver tip.
All we need know is for someone to say that water dilutes the effects of the freshly brewed green tea.
Eating food functionally these days is like trying to solve a 5 x 5 rubiks cube.
Enjoy [lol]
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