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Scientific Issues
[Q&As are placed in reverse chronological
order. In other words,
the latest Q&As come first. Earlier ones are further down the
page.] |
Latest Updates to drlowe.com
Q&As |
June 3, 2005
Question: Your article
on breathing problems and hypothyroidism was a real eye opener for me. I
started having air hunger shortly after my other hypothyroid symptoms began.
I had never had air hunger before. It is severe enough that I can’t run
anymore and it’s a strain to walk fast. My endocrinologist told me that I
developed asthma for some reason unrelated to my hypothyroidism. He said I
should see a pulmonary specialist.
In your article on breathing problems, you wrote about a study in which
T3 effectively relieved the asthma symptoms of children. After some kids
started using T3, they were able to stop their asthma medications.
After I read this in your article, I took a copy to the endocrinologist.
I asked him to let me try T3 to see if it would relieve the air hunger. He
glanced at the article and then threw it back across his desk to me. He
spouted out that breathing problems have nothing to do with hypothyroidism.
He also said that if hypothyroidism had caused my air hunger, the
levothyroxine (T4) he’d prescribed would’ve relieved it.
I pushed your article back across his desk and pointed to the list of
studies you quoted in the article. "These are scientific studies,"
I said. "They prove that some hypothyroid patients have breathing
problems, and that T3 instead of T4 may relieve the problems." He
pushed the article back without looking at it and said, "You can find
any nonsense you want on the Internet."
I told him that if he couldn’t intelligently comment on the scientific
studies that contradict what he says, then he’s unscientific. He was
stunned and sat speechless. I asked if he was going to read the studies you
listed. His face turned so red that I got scared, but I was angry, too. I
told him that I hold my doctors to a higher standard of intelligence and
that he was fired. I walked out and won’t return.
My husband was upset about what I’d done. He said that I missed the
chance to educate the endocrinologist. I disagree. I don’t believe the
endocrinologist was open to learning. My husband and I have argued about
this, and I’d really appreciate knowing what you think. Do you think I
should have handled the situation differently?
Dr. Lowe: Your question reminds me of
the wide-ranging advice people have given me on how best to handle
endocrinologists such as the one you describe. Some have advised me,
"Pretend that their authority humbles you, and then subtly lure them to
the truth so they think they discovered it." Others have advised,
"Hit ‘em hard right between the eyes with the scientific truth."
As a reformer, I generally take a polite but firm stance based on
plausible scientific evidence. My goal of reforming some of the practices of
endocrinologists, however, is long range. So, I often have the luxury of
adapting my approach to varying circumstances.
But you don’t have that time-permitting luxury. Your breathing problem
is of immediate concern, and the disorder the endocrinologist is
treating you for is possibly the cause of the problem. In view of this, it
was entirely proper that you insisted he intelligently discuss the problem
with you. And it was proper that you fired him for refusing to do so.
You also gave him a
list of studies that verify that hypothyroidism is often the cause of
breathing problems. The studies aren’t "nonsense" from the
Internet, as he implied; they are reports by reputable researchers published
in credible scientific journals. Therefore, he was obliged to sensibly
discuss the issue with you. Some case law, in fact, bears directly on this
subject: if a doctor is going to give an opinion on a medical topic, he has
a professional responsibility to be aware of the scientific status of that
topic. Apparently, the endocrinologist failed in that responsibility.
Some endocrinologists are caring, courteous, rational individuals. The
one you were dealing with—at least in the interaction you described—wasn’t.
Instead, he was ignorant of the issue at hand, dogmatic, and close-minded.
With due respects to your husband’s opinion, trying to re-educate a doctor
of that ilk is usually a waste of time.
Philosopher Bertrand Russell wrote, "So long as men are not trained
to withhold judgment in the absence of evidence, they will be led astray by
cocksure prophets, and it is likely that their leaders will be either
ignorant fanatics or dishonest charlatans."[1]
Your endocrinologist apparently fails to withhold judgment in the absence of
evidence. And, as Russell implied, his beliefs are likely to be shaped by
leaders who are no more intellectually responsible than he. Your challenging
and firing him, then, seems to me a prudent act of self-preservation.
I believe you employed what is the single best approach for patients to
deal with an arrogant, dogmatic, and authoritarian doctor in any specialty.
That approach is to demand that the doctor account rationally for
scientific evidence that contradicts his beliefs; and if he doesn’t
comply, summarily dismiss him as unscientific and thereby an unworthy member
of one’s health care team. In short, you handled the situation in
exemplary fashion, and I believe that other patients who follow your example
will benefit immensely.
Reference
[1]
Russell, B.: Unpopular Essays. New York, Simon and Schuster, 1950,
,p. 27.
November
4, 2003
Question: I am a first year medical
student on the East Coast. I'm interested in participating in fibromyalgia
research. Can you direct me to any research teams doing work in this area?
Dr. Lowe:
I appreciate your interest in fibromyalgia research. I regret to say,
however, that I’m not aware of any research teams in your area that I
could enthusiastically refer you to.
Our research team, on the other hand, is
about to begin metabolic studies of fibromyalgia patients compared to
healthy controls. We’ll be using indirect calorimetry (for measuring
oxygen intake and calculating the metabolic rate) and many other measures,
such as body composition. We’ll then use regression statistics to learn
what metabolism-influencing factors account for differences we find between
the patients and control subjects. If you lived in the Boulder/Denver area,
we’d welcome your direct help in conducting the actual studies, perhaps in
taking measurements of patients and control subjects. But since you live on
the East Coast, taking part in this way may be impossible for you.
There are other ways you might take part,
however, that could be educationally enriching. I’ll mention two ways you
might consider.
One is helping us collect copies of the
journal papers we must obtain while planning and designing studies. Our
research coordinator, Jane Jones, RN, and I have already collected many
papers for the first of our upcoming metabolic studies, but no end ever
comes to this essential task. For a student, helping in this way isn’t a
mere menial task. Most veteran researchers find themselves doing some—occasionally
all—of this leg work. But for a student, performing it can be invaluable
in developing the habit of scholarship; until all journals and books are
available electronically, the leg work of library research will remain
essential to acquiring a thorough knowledge of the subject under study.
Acquiring this knowledge is an indispensable step in the scholarship that
underlies good scientific work. Because of this, the leg work and a
willingness to do it are also essential parts of scholarship.
The other way you might help is to scrutinize
the content of the papers you collect, giving extreme and critical attention
to every detail that may be related to our upcoming studies. By studying the
papers’ content, you would expand your own knowledge. At the same time, as
a distance member of the research team, you could contribute to our
knowledge base; the more minds we have on the team cogitating on and culling
information related to our studies, the better the outcomes of our studies
are likely to be. I appreciate, of course, that the demands of your medical
school studies could make participation in this way an extreme challenge for
you.
I hope my comments are helpful, and I look
forward to hearing from you.
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Continued from bottom of left page . . .
May
24, 2001
Question:
I am a family physician and
am interested in your work. My bother-in-law is an endocrinologist who is
also a medical researcher. After looking at your published reports, he
dismissed your claims, saying that your studies didn’t involve enough
patients. Not being a researcher, I’m not able to disagree with him. I am
wondering what you have to say about his criticism?
Dr. Lowe:
In clinical research, there is no universal number of patients researchers
must include for study results to be credible. In some studies, many
patients are needed; in others, few are required.
For each individual study, researchers must carefully calculate
(as we've always done) the
number of patients required. The purpose is statistical; we must know how many patients are
needed so
that statistical tests will show differences (if there are any) between the results
of the treatment and placebo groups. If the effect of the tested
treatment is weak, researchers must include more patients for statistical
tests to detect a difference. The weaker the therapeutic effect, the larger
the number of patients needed. If the therapeutic effect is strong, however,
fewer patients are required. Some treatments are so powerful that only a
single patient (used in a special study design) is needed for statistics to
detect the therapeutic effect.
It is meaningless, then, to praise or
denounce a study merely because of the number of patients included. To do so
is to ignore the importance of several factors that interact to necessitate
more or fewer patients in the study.
Even with small numbers of patients in some
of our studies, statistical tests showed that the effects of the metabolic
treatment were extremely powerful. Using more patients in the studies
would have only confirmed the powerful effects. Our research funds have been
meager. Expecting that the therapeutic effects of the treatment would be
strong, we used a high-quality study design that would show the effects of
the treatment with the smallest possible numbers of patients. As a medical
researcher, your brother-in-law should appreciate the prudence of our
frugality.
Even more important, your brother-in-law
should appreciate another point, as any well-trained medical researcher
should. Statistical tests of our study results showed something remarkable:
on some measures of patient status, the probability that the differences
between the treatment and placebo groups were due to chance was one in
10,000! To put this number in perspective, the differences between the
groups would’ve been considered statistically significant if the tests had
shown that the probability was only five in 100. The significance levels
reached with the small number of patients show that the therapeutic effects
of the treatment were extraordinarily powerful. Hence, the small
number of patients is not a weakness of the studies—it is in fact
a
strength! Only one thing is more noteworthy to me than the
exceptional statistical significance levels reached in these studies—the
fact that experienced medical researchers and journal editors failed to
understand or acknowledge what these results mean.
I would ask your brother-in-law several
questions. Why it is acceptable for NASA scientists to send one man, John
Glenn, into space to study the effects of space flight on the elderly? Why
is it acceptable for drug companies to use single patients in studies of the
dose-response curves of drugs? Why is it acceptable that a powerful
technology called "behavior modification" was developed largely
through studies involving single patients or few patients? And, in view of
these other acceptable uses of single or small numbers of patients, why is
it not acceptable that in some of our studies, we used the same
approach?
The answer is that our use of the same
approach is perfectly acceptable scientifically. Politically
and psychologically, though, it isn’t. Over the years, I’ve
learned that most of our detractors—especially endocrinologists—don’t
respond with forethought to our studies and treatment approach. Instead,
they react emotionally, reflexly declaring that we must be wrong.
After all, our views differ from what their authority figures taught them.
The detractors don’t bother to objectively assess the evidence for our
views; rather, they quickly go to work trying to justify their reflex
denouncements of our views. While they’re at it, they look about for any
excuse to say we’re wrong. Lacking good excuses, they swiftly stoop to
using flimsy ones. Among them is the charge that we used too few patients in
some of our studies.
In fairness, I can’t say with certainty
that your brother-in-law’s criticism of our studies was emotionally or
politically driven. Maybe he just isn’t familiar with what dictates the
number of patients required in clinical trials. This is a matter, however,
that is crucial for medical researchers to understand, and I’ll be happy
to discuss it with him. Most likely, he has books in his own library on
statistics and research methods that furnish better explanations than I can
give him. After he’s had time to read the explanations, I trust that he’ll
retract his initial criticism of our studies. As a devout critical
rationalist, I’ll sincerely welcome any thoughtful criticisms he
has of the studies.
© 2011 Dr. John C.
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