Black Tea--Bad for Health
Allan Gorochow
While perusing a favorite herb news group, I was surprised when a
Herbologist posted this statement:
"Green tea undergoes a controlled fermentation which changes the flavor
and color, radically altering healthful natural occuring compounds.
Black tea does not have the beneficial effects of green tea and may, on
the contrary , be detrimental to health as green tea is helpful"
This is a surprising statement. I had always believed that black tea
had less healthful than green tea, but NEVER found that it could be
harmful.
Any information will be helpful.
Natarajan Krishnaswami
On Wed, 27 May 1998 12:42:48 -0400, Allan Gorochow <nom...@webtv.net> wrote:
> "Green tea undergoes a controlled fermentation which changes the flavor
> and color, radically altering healthful natural occuring compounds.
> Black tea does not have the beneficial effects of green tea and may, on
> the contrary , be detrimental to health as green tea is helpful"
According to info from the NIH's web page, black tea does not appear
to increase risk of cancer, and it may also reduce it, though if it
does, not as much so as green. The curing reduces the quantity of
antioxidant polyphenols (e.g., EGCG, EC, ECG, EGC) which reduce risk
of cancer, but there is no indication that consumption og black teas
_increases_ carcinogenesis.
(The documents I found are
Goldbohm et al: "Consumption of Black Tea and Cancer Risk: a
Prospective Cohort Study", J Natl Cancer Inst, issue 2,
1996;88:93-100,
Yang et al: "Polyphenols As Inhibitors of Carcinogenesis",
Environmental Health Perspectives 105, Supplement 4, June 1997:], and
"NIEHS News", Environmental Health Perspectives 105-8, August
1997.)
N.
--
nx...@po.cwru.edu, RFVC Moderation Team
Last night I met upon the stair
A little man who wasn't there.
He wasn't there again today.
Gee how I wish he'd go away!
Jonathan Byron
There have been a few epidemeological studies that have linked black tea
to a few types of cancer, including the esophagus and bladder. Although
all the evidence is not in, many believe that it is co-factors, and not
the tea itself. What co-factors?? Drinking tea at very hot temperatures,
which damages cells in the mouth and throat. Consuming black tea with
salt and other (unspecified) ingredients. Drinking teas that have been
dried over a fire, and that contain 'tar' has also been indicted
(lapsang souchon, any one??). According to one study I read, 20% of oral
cancers in South America may be from drinking Mate that is dried over
open fires.
The studies that show that black tea causes problems have been local or
regional - while an association was found in one place, this was not a
universal association. This supports the notion that it is some factor
other than the tea itself. The typical scientific study is based on a
alpha cutoff level of 0.05, which means that there is a five percent
chance that the results which were deemed significant were in fact
caused by random fluctuations or sampling error. In epidemeology, most
studies are not planned experiments, which further increases the chances
that an uncontrolled factor is present.
I do not believe that there is enough evidence to conclude that tea in
moderation is a cause of serious health problems. Caffeine may cause
problems with pregnancy, and complicate conditions like panic disorder
and some heart conditions. And black tea does have some beneficial
compounds, although different than green tea and in lower amounts.
Jonathan
Allan Gorochow wrote:
>
> While perusing a favorite herb news group, I was surprised when a
> Herbologist posted this statement:
>
> "Green tea undergoes a controlled fermentation which changes the flavor
> and color, radically altering healthful natural occuring compounds.
> Black tea does not have the beneficial effects of green tea and may, on
> the contrary , be detrimental to health as green tea is helpful"
>
Tenebrarum
<<Black Tea, bad for health>>
So what? Even the health nuts I know indulge in "unhealthy" behaviors. The
epitome of this came when a promiscuous male homosexual acquintance of mine who
liked sex in public restrooms (always with a condom, of course) lectured me on
his "healthy" lifestyle because he was a vegetarian & I'm not. Who cares if
tea is mildly unhealthy? Obviously black tea isn't instantly fatal. It isn't
crippling or fatal after decades of exposure. Drinking tea is safer than
skiing.
teneb...@aol.com
--------------------------
Yes, I get all my opinions from pop singers
--------------------------
Space Cowboy
One day Jonathan Byron pondered then posted ...
snip
>The studies that show that black tea causes problems have been local or
>regional - while an association was found in one place, this was not a
>universal association. This supports the notion that it is some factor
>other than the tea itself. The typical scientific study is based on a
>alpha cutoff level of 0.05, which means that there is a five percent
>chance that the results which were deemed significant were in fact
>caused by random fluctuations or sampling error. In epidemeology, most
>studies are not planned experiments, which further increases the chances
>that an uncontrolled factor is present.
The parts of China where tea is consumed and there is a higher than
average cancer rate is where the food is smoked, cured, dried, salted.
---
Jim
Socko47
I was recently handed a few articles about tea after questioning a college
professor about the amount of fluoride contained in tea.
1. From www.cyberdiet.com
- Excessive intake and toxicity symptoms: Detrimental effects on bone
health, kidney function, and muscle and nerve function. They listed a cup of
tea having 0.24-1.008mg of fluoride.(Do not forget to consider the fluoride
content of the water used to brew - JS)
2. From www.healthanswers.com
- Recommended dietary allowances for fluoride.
- Adults --1.5 to 4.0 mg
- Intake of 20-80 mg over a period of many years can cause skeletal
fluorosis, which causes the bones to be chalky and brittle.
- Dental fluorosis occurs when there is high amount of fluoride in the
drinking water, enamel becomes dull and unglazed with some pitting(mottled
enamel). At very high concentrations (over 2.5 parts per million {ideal is 1.0
PPM}) dark, brown stains appear on the teeth. Rarely any cavities just
unsightly.
3. From www.ncbi.nlm.nih.gov
- "The relationship of fluorosis and brick tea drinking in Chinese
Tibetans" from _Environ Health Perspect_
1996 Dec: 104(12): 1340-1343.
- These people have a morbidity of skeletal fluorosis at 32.83% of the
sample. And a morbidity of dental fluorosis of 51.2%. They drink : children
5.49mg/person/day and adults 10.43 mg/person/day. With 94.% of their fluoride
intake from brick tea and zanba(?).
I hope this puts the amount of fluoride into some perspective. I would like
to add, however, that there are organizations that strongly lobby for the
removal of fluoride from drinking water as it is their contention that
fluoride is harmful. They have indicated that there are many maladies
associated with fluoride ingestion including cancer. So be atune to what you
read if you research this further. As an example I was also given the first of
21 pages from www.premier1.net/~atlas/fluorideresch.htm. It says at the top
"The following is a list of articles and research that I have compiled over the
last year (or so). I presented this material to the Fircrest City Council in
hopes of eliminating fluoride from their water supplies - a dangerous act that
they've done for over forty years."
I have not read the other 20 pages but 1) dentists would be a lot busier
without fluoride and they promote its use. and 2) fluoride is a poison in large
quantities - babies and small children can be poisoned by injesting too much
tooth paste (Antidote is milk and get them to the hospital).
Hope that sheds more light on the question.
J. Salkowitz
StanHS
Simple answer is to used water filter, like the Brita, which removes much of
the fluorides, lead, etc. Tastes better too. Stan.
Steve Brown
Viggo Mortensen is a homosexual.
https://charbonneau-gomery-corruption-canada.blogspot.com/2023/08/viggo-mortensen-is-gay.html