My
creatinine (a marker of kidney function and hydration) is slightly
elevated. So I was advised to drink more.
Fine.
Reasonable.
I
told my oncologist's nurse – the one who told me to drink more –
that I'd have more tea during the day. “No” she said. Tea has
caffeine and would cause a diuresis. I'd lose more water than I'd
take in. I didn't say much. That's not what I learned in medical
school, but that was more than a half-century ago and medical opinion
might have changed.
But
it hasn't.
According
to Bruce Richardson, a columnist for Tea Time magazine,
Tea consumption does not
produce a negative diuretic effect unless the amount of tea consumed
at one sitting contains more than 300mg of caffeine.
At an average 50mg of caffeine per cup, this is equivalent to six cups of tea at one sitting.
And
Dr. Jeffrey Blumenthal,
Director of Antioxidant Research at Tufts University in Boston.
Speaking at the 2012 International Tea & Health Symposium
at the Department of Agriculture in Washington, DC, Dr. Blumenthal
had this to say about the subject:
"We now have more than sufficient data to get over the myth that somehow tea is a diuretic and dehydrating. It is not."
Too
much of what we accept is myth and old wives' tales.
Perhaps,
as “everyone knows,” chicken soup is the universal panacea.
Indeed, I saw in an eighteenth century medical book I once owned,
that chicken soup, used as an enema, was a useful therapy for
something. I can't remember what it was intended for, but I can't
imagine it had any particular value. Sounds like a waste of good
chicken soup. (Even bad chicken soup would probably be of no value
as an enema, though I can think of no better use for it.) I'm
reasonably certain that many of the things we do today will, in
future years, be viewed as myths and superstitions, yet today we put
all our trust in them.
The
same nurse advised me to wear shoes when I walk because a neuropathy
of the feet was one of the side effects of a drug I was taking and I
had started to become unsteady. I'm reasonably certain that this is
a standard teaching of nurses (and mothers) but I choose to ignore
it. Shoes make my feet hurt and make me more unsteady, and I walk
(indoors at least) better in soft slippers. She never asked me
anything about other foot problems; she only advised that I wear
shoes all the time. One size (of therapy) fits all.
You've
heard such advice before. It may have come from the media (usually
regarding food, cancer, heart disease, and diabetes) which are quick
to publicize first (and unverified) studies; it may have come from
others who pass on “wellness” advice and what they've heard or
what everyone knows – even the doctors who, everyone knows, are
hiding it from you; its origin may be your grandmother – the font
of all the wisdom of the ages. And there are the views of those who
would help us cure disease by using “alternative medicine” – a
fashion that has provided additional options, often of no value –
to those easily swayed by both the latest and by the time-honored
explanations of measures likely to provide good health.
Some
of the therapies, irrespective of the source, are associated with
success, but the same can be achieved by a variety of placebos.
Others simply occupy the patient until “nature takes its course”
and he recovers – time heals some wounds. We should not ignore the
fact that some have a suggestion of scientific validity and should be
investigated further. However we should await the results of those
investigations before proclaiming their value.
But
most of these therapies are based on belief, and won't yield to logic
and any information contrary to what their proponents “know.”
Thus the nurse (believes and) advises that tea will cause
dehydration, even though there is ample evidence that this is not
true. Too many people are swayed by outdated ideas which they won't
surrender no matter what the contrary evidence. All the claims of
those who practice allopathic medicine are viewed skeptically if they
disagree with common knowledge or the views of “experts”
promoting “feel good,” or “feel superior” methods for dealing
with our ills – or what we think to be our ills.
There's
no cure for this disease. I won't try to defend the medical
profession because I'll be accused of being part of the conspiracy to
malign therapies other those of the “club.” Even when ancient
and alternative methods and medicines delay proper treatment, they're
seen as valid alternatives to standard ways.
Sometimes,
as the saying goes, the cure is worse than the disease.
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