Decaf Green Tea...

Eric said:

1) Am I losing any nutritional value by drinking the decaf kind?

Caffeine is just plain bad for you. Besides causing insomnia and
withdrawal headaches, caffeine raises your blood pressure and
homocysteine levels.

I drink plenty of white tea and there is no problem. Tea is not high
in caffeine. However, if you want to avoid caffeine, and you want the
antioxidant protection of green tea, you can get organic red tea, which
is fairly inexpensive. I got some at mountainroseherbs over the
internet. It tastes a bit like fruit punch. I also got this cloth
sock attached to a round wire, so you put the loose tea in the sock and
let it steep in the hot water, then you just dump out the wet mass in
the garbage and wash out the sock in the sink. Quick and simple, and
of course you can use it for green tea, if that's what you really want
to drink.

Quoted message said:

Eric wrote:
1) Am I losing any nutritional value by drinking the decaf kind?

"Mr-Natural-Health" <[email hidden]> replied:

Quoted message said:

Caffeine is just plain bad for you. Besides causing insomnia and
withdrawal headaches, caffeine raises your blood pressure and
homocysteine levels.

Could caffeine also caused the mal-absorption of Vitamin B-1?

George Lagergren said:

Could caffeine also caused the mal-absorption of Vitamin B-1?

You are apparently alluding to the effect of caffeine, a diuretic, on
water-soluble vitamins? Caffeine is not a true diuretic. It is also
classified as a stimulants (see PMID: 10608 "stimulants ... formed
molecular complexes with thiamine"😉.

You should try tracking natural health research for 3 years. You will
pick up on a lot of things. I saw nothing that particularly stood out
on this topic in Medline.

"montygram" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

I drink plenty of white tea and there is no problem. Tea is not high
in caffeine. However, if you want to avoid caffeine, and you want the
antioxidant protection of green tea, you can get organic red tea, which
is fairly inexpensive. I got some at mountainroseherbs over the
internet. It tastes a bit like fruit punch. I also got this cloth
sock attached to a round wire, so you put the loose tea in the sock and
let it steep in the hot water, then you just dump out the wet mass in
the garbage and wash out the sock in the sink. Quick and simple, and
of course you can use it for green tea, if that's what you really want
to drink.

Clin Chim Acta. 2005 May;355(1-2):47-53. Epub 2005 Jan 26. Related Articles,
Books, LinkOut

Effect of caffeine on oxidation susceptibility of human plasma low density
lipoproteins.

Krisko A, Kveder M, Pifat G.

Department of Physical Chemistry, Ruder Boskovic Institute, Bijenicka 54,
HR-10000 Zagreb, Croatia.

The effect of caffeine on oxidation susceptibility of low density
lipoproteins (LDL) has been studied. LDL oxidation was induced by copper
ions and an azo initiator. The conjugated dienes formation was followed
spectrophotometrically and indicated the LDL oxidation status. Changes in
LDL protein moiety during the lag phase, studied only in the experiments of
copper induced oxidation, were followed using the intrinsic fluorescence
spectroscopy. The decay of LDL fluorescence signal during initial stages of
oxidation was slower in the presence of caffeine. Supported by the
fluorescence quenching and polarization measurements, these results may
indicate the protective role of caffeine against LDL oxidation in vitro. The
results also indicate that the production of conjugated dienes in the
propagation and decomposition phase of LDL oxidation is lower in the
presence of caffeine, regardless of the initiation mechanism. These findings
may have implications for the effect of caffeine on LDL in vivo.

PMID: 15820477 [PubMed - as supplied by publisher]

"Mr-Natural-Health" <[email hidden]> wrote in
message news:[email hidden]...

Quoted message said:

Eric said:

1) Am I losing any nutritional value by drinking the decaf kind?

Caffeine is just plain bad for you. Besides causing insomnia and
withdrawal headaches, caffeine raises your blood pressure and
homocysteine levels.

Virology. 2005 May 10;335(2):177-84. Related Articles, Books, LinkOut

Inhibition of HIV-1 replication by caffeine and caffeine-related
methylxanthines.

Nunnari G, Argyris E, Fang J, Mehlman KE, Pomerantz RJ, Daniel R.

The Dorrance H. Hamilton Laboratories, Center for Human Virology and
Biodefense, Division of Infectious Diseases and Environmental Medicine,
Department of Medicine, Jefferson Medical College, Thomas Jefferson
University, Philadelphia, PA 19107, USA.

Human immunodeficiency virus type I (HIV-1) DNA integration is an essential
step of viral replication. We have suggested recently that this stage of
HIV-1 life-cycle triggers a cellular DNA damage response and requires
cellular DNA repair proteins for its completion. These include DNA-PK
(DNA-dependent protein kinase), ATR (ataxia telangiectasia and
Rad3-related), and, at least in some circumstances, ATM (ataxia
telangiectasia mutated). Host cell proteins may constitute an attractive
target for anti-HIV-1 therapeutics, since development of drug resistance
against compounds targeting these cellular cofactor proteins is unlikely. In
this study, we show that an inhibitor of ATR and ATM kinases, caffeine, can
suppress replication of infectious HIV-1 strains, and provide evidence that
caffeine exerts its inhibitory effect at the integration step of the HIV-1
life-cycle. We also demonstrate that caffeine-related methylxanthines
including the clinically used compound, theophylline, act at the same step
of the HIV-1 life-cycle as caffeine and efficiently inhibit HIV-1
replication in primary human cells. These data reveal the feasibility of
therapeutic approaches targeting host cell proteins and further support the
hypothesis that ATR and ATM proteins are involved in retroviral DNA
integration.

PMID: 15840517 [PubMed - in process]

Robert said:

Quoted message said:

Caffeine is just plain bad for you. Besides causing insomnia and
withdrawal headaches, caffeine raises your blood pressure and
homocysteine levels.

That means caffeine sucks, even in green tea! Just thought that you
might want to know.

If consumed with or after a meal, black and green tea both reduce iron absorption in the gut, perhaps by 60% to 75%.

Coffee also reduces iron absorption, but to a lesser extent (rates from 25% to 40% have been quoted).

The prime culprit is not caffeine, but tannic acid (as a polyphenolic - and an associated binding to Fe2).

Caffeine has a tautomeric form than has a phenolic structure, which may explain its role, but mainly it has a ketone structure in solution.

Ie, nobody knows for sure whether Caffeine is significant in iron absorption.

It is implicated in increased calcium excretion.

T.

Mr-Natural-Health said:

You are apparently alluding to the effect of caffeine, a diuretic, on
water-soluble vitamins? Caffeine is not a true diuretic.

Diuretics are considered the drug of choice for initial therapy of
hypertension by physicians.

Caffeine actually raises blood pressure, so it really is not a
diuretic.

During exercise, the addition of caffeine, can actually raise your
blood pressure to dangerously high levels.

"Mr-Natural-Health" <[email hidden]> wrote in
message news:[email hidden]...

Quoted message said:

Mr-Natural-Health said:

You are apparently alluding to the effect of caffeine, a diuretic, on
water-soluble vitamins? Caffeine is not a true diuretic.

Diuretics are considered the drug of choice for initial therapy of
hypertension by physicians.

Caffeine actually raises blood pressure, so it really is not a
diuretic.

J Pharmacol Exp Ther. 2005 Apr;313(1):403-9. Epub 2004 Dec 8. Related
Articles, Books, LinkOut

Requirement of intact adenosine A1 receptors for the diuretic and
natriuretic action of the methylxanthines theophylline and caffeine.

Rieg T, Steigele H, Schnermann J, Richter K, Osswald H, Vallon V.

Departments of Medicine and Pharmacology, University of California San Diego
and VASDHS, 3350 La Jolla Village Drive (9151), San Diego, CA 92161.
[email hidden].

Although the diuretic and natriuretic effects of the methylxanthines
caffeine and theophylline are well established, the mechanisms responsible
for these effects are unclear and may be related to inhibition of
phosphodiesterases and/or antagonism of adenosine receptors. With regard to
the latter, pharmacological blockade of A(1) receptors can induce diuresis
and natriuresis by inhibition of proximal tubular reabsorption. To elucidate
the role of the A(1) receptor in renal actions of methylxanthines,
experiments were performed in A(1) receptor knockout (A(1)R-/-) and
littermate wild-type (A(1)R+/+) mice. Urinary excretion was determined in
awake mice in metabolic cages over 3 h in response to theophylline (as
theophylline(2)/ethylenediamine, 45 mg/kg), caffeine (45 mg/kg), or vehicle
(0.9 ml/30 g b.wt. of 0.85% NaCl) given by oral gavage. Theophylline and
caffeine elicited a diuresis and natriuresis (in absolute terms and related
to urinary creatinine excretion) in A(1)R+/+ but not in A(1)R-/- mice. In a
second series, the renal effect of intravenous application of theophylline
(30 mg/kg) was determined in clearance experiments under anesthesia. This
study revealed that the blunted diuretic and natriuretic effect of
theophylline in A(1)R-/- mice was not due to different responses in blood
pressure or glomerular filtration rate. The data indicate that an intact
A(1) receptor is necessary for caffeine- and theophylline-induced inhibition
of renal reabsorption causing diuresis and natriuresis. This is consistent
with the assumption that A(1) receptor blockade mediates these effects.

PMID: 15590766 [PubMed - in process]

Quoted message said:

During exercise, the addition of caffeine, can actually raise your
blood pressure to dangerously high levels.