I've often used this blog to identify people who I think pose a public danger. Oftentimes, it's people who lack the training, licensing or any form of validation to give them credibility. Today, I found a doozey. I thought I would share the entire unedited exchange with this gentleman for those with the time on their hands to be entertained, and to recognize how easy it is to try to mislead people with lots of fast and loose, but mostly misleading, facts.
It all started with a recent article that appeared on October 1, 2012 in The Wall Street Journal titled "Questioning the Superpowers of Omega-3 in Diet," to which after reading I submitted the following comment online:
"According to Consumer Reports' September 2012 issue, there are over
55,000 dietary supplements for sale in the U.S. That's 55,000 products
sold by commercial interests trying to convince Americans that we can't
live without them. There's hardly anyone on the other side shedding
light on their value to overall health. In fact, there is not a single
study ever published that shows that a supplement in the absence of
deficiency extended a single day of human life.
Furthermore,
there were no such products for the first 150,000 years of our history
until about the 1930s. (Yes, some plants were discovered early to have
medicinal purposes but they were often used in their natural state
without factory processing.) Yet Michelangelo lived to 87 and the Greek
philosophers into their 90s. The Sardinians' trace their extended
longevity to the Bronze Age.
However, virtually every day now a
new study comes out that questions the usefulness of taking one of the
many popular supplements like Fish Oil, Vitamin D, Ginkgo, etc. Each
time people leap to the opportunity to defend or criticize the validity
of the studies. The nature of such studies that look at isolated
variables offer plenty of room for debate. This means they completely
ignore the synergism among hundreds of other nutrients found in
different foods.
What is not debatable is that most (some
exceptions best determined with the help of a knowledgeable physician)
people would be better off eating whole foods like vegetables, fruits,
beans, nuts, seeds, whole grains, and wild fish (this is obviously
debated by Vegans, but it's hard to argue with the health benefits of
wild Salmon, a non-predatory fish, low in contaminants like mercury and
PCBs, but high in Vitamin D, DPH, EPA, and an excellent source of amino
acids.) Aspects of such a diet has been the staple of multiple cultures
around the world for thousands of years that count among them the
highest percentage of centenarians.
The bottom line is that
people should not take any supplements in the absence of a known
deficiency, which should only be determined by proper testing with the
input of a knowledgeable physician or registered dietitian, and should
stick with non-processed foods to the extent possible and stop looking
for salvation in the form of a pill.
Finally, I say Caveat
Lector, "Let the reader beware." Don't take medical advice from the mass
media. As Mark Twain once said, "Don't take advice from a health book.
You could die from a misprint." This equally applies to health websites,
newsletters, magazines, and TV shows.
They don't know YOU (your
medical and social history, medications, diet, stress, etc.) and the
advice may not apply. Find a physician willing to invest the time to
know you well and who has spent time to acquire (usually not taught in
medical school) knowledge of nutrition so he or she can guide you
appropriately."
In response to my submission, a gentleman by the name of Bill Sardi posted this response.
"Of course, studies show ~40% of Americans are deficient in magnesium,
~40% are short on vitamin B12, most Americans have low levels of vitamin
D at some time of the year, few Americans achieve optimal levels of
vitamin C, a large portion of Americans are deficient in vitamin B1 due
to poor absorption caused by drugs (diuretics, digitalis), coffee, tea,
alcohol or refined sugar. Nearly all smokers are vitamin C deficient.
Many older Americans are zinc deficient. Growing kids and pregnant and
lactating mothers have nutritional needs that are not commonly met by
the best diet. Stress, medications, and lack of stomach acid induce
essential nutrient deficiencies. And yes, too many Americans have
undetectable levels of omega-3 oils in tissues. So much for the idea of
skipping supplements. --Bill Sardi, Knowledge of Health, Inc."
To which I responded:
"It's wonderful that you can rattle off a number of statistics to prove
your point. However, I must challenge their accuracy. In the most recent
2012 CDC study of American's nutritional state, none of the numbers you
cite proved to be accurate. Can you provide a valid source for your
reference?
I'm not sure what your agenda is to push supplements, but
as a doctor who regularly checks for vitamin deficiencies, I believe you
to be misguided. When relying on studies, it is important to subject
such studies to close scrutiny to determine their validity and
applicability. I find that most dietary supplement studies that claim
proof of usefulness fail these two tests.
For example, a recent study
showed that Vitamin D decreased cold symptoms. However, the Vitamin D
was given to people with extreme levels of deficiency. The study did not
show efficacy in inadequate to normal levels of Vitamin D.
No one
would disagree that someone with very levels of Vitamin D would benefit
from correction. But before I would prescribe a pill, I would suggest
increased sun exposure, albeit in small doses (about 15-30 minutes
during the late day) and without exposure to the face, and ingestion of
wild salmon and Almond milk, both rich in the vitamin.
The bottom
line is no one should take a single supplement without consulting his or
her physician. It's often been said that a doctor that threats him or
herself has a fool for a patient. I say that someone that treats him or
herself has a fool for a doctor.
Please let's leave medical
decision-making to trained and licensed professionals. Of course,
patients should always ask questions and challenge assertions if they
see fit."
After writing my response, I became curious as to who exactly is this Bill Sardi. So, I found his email address and wrote him the following email.
"Hi Bill,
Can you please let me know what scientific credentials or
degrees you have?
To your health,
Steve"
Here is the response I got:
"Dr.
Charlap
Doctors
only ask that question when threatened. Don't throw your credentials in
my face. It is a disgrace that a well-trained physician like yourself
makes such a foolish and uninformed statement as to recommend others not take
supplements unless they have a known deficiency. Patients often walk in
and out of a doctor's office with burning feet, sore tongue, short-term memory
loss, all overt symptoms of pernicious anemia, and doctors may or may not order
a B12 test, which is often normal, meaning the norm on the test is flawed.
This is well documented. A patient can get a blood calcium or blood
magnesium level, which only measures how much mineral is being lost, not
conserved (red cell magnesium levels may be more helpful). Serum zinc levels
are notoriously inaccurate. A vitamin C and B serum levels only reflect
recent consumption as they are water soluble nutrients. Why are all
diseases considered drug deficiencies?
You
are an advocate for health, but do you know what that is? The absence of
disease? Everyone has the disease of aging.
Why
is it that the biological action of most prescription drugs can be replicated
with a nutritional supplement that is far cheaper and less problematic, yet
doctors continue to prescribe drugs to the point of breaking the insurance pool
financially?
Tell
me what prevention is. You advocate that. Is it colonscopies, PSA
tests, mammograms? All this is is scouting for more disease to treat.
It prevents no disease.
In
regard to your statement that no supplement has ever been shown to add a day of
life unless a deficiency exists, I submit to you the following:
A study of 11,000 Americans over 10 years revealed
that individuals with the highest level of vitamin C intake, only about 300
milligrams, suffered 35 percent fewer deaths than those with the lowest intake,
about 50 milligrams a day. This amounts to about 6 added years of life to those
who consume higher levels of vitamin C. Since 300 mg of vitamin C is difficult
to obtain from dietary sources alone, the primary group that exhibited
increased life span were the vitamin C supplement users. A person
would have to consume five oranges a day to get 300 milligrams of vitamin C
from their diet alone. Reference: Cowley G, Church V, Live longer with vitamin C,
Newsweek May 18, 1992 and Enstrom JE, et al, Vitamin C intake and mortality
among a sample of the United States population, Epidemiology 3: 194-202,
1992. There are other examples, but this one will suffice.
You need to be cleaning up your own profession
before you give advice to the public.
Bill Sardi"
And finally, here was my response:
"Hi
Bill,
I
would be happy to review the study you cite if you would send it to me. I am
well aware of all the NHANES research, having previously carefully reviewed
the body of it. If my recollection is correct, no conclusions can
generally be drawn from NHANES data, however, It's been a while since I last
reviewed such data.
From
the study abstract I reviewed, this particular study you cite appears to be a
retrospective, observational study the type that almost always fails to show
causality. Also, quoting from the abstract, it states the Vitamin C data
was from "detailed dietary measurements and use of vitamin
supplements," which means that the vitamin C came from both diet and
pills, thereby skewing the results even further for validity for cause and
effect. Vitamin C is an essential vitamin and a deficiency is known to cause
disease. If
I am wrong about the study, after reviewing again whatever you send me, I would
be happy to admit my error.
Also,
if you are aware of the NHANES related data such as the CDC's Second Report
that came out in 2012, then why did you cite inaccurate deficiency data in your
Wall Street Journal response?
Beyond that, the presumptive answer based on your response is that you have no formal
scientific training. If I am wrong, please correct me. Although I am sure
that one can self-teach themselves quite a bit, there is no substitute for
formal training, testing, and validation. You, may I assume, have no clinical
experience, other than your own or family's medical encounters. Yet, you think
you have it all or mostly figured out and it's all a BIG pharma conspiracy.
Well, I have news for you, I don't meet with pharmaceutical reps, don't take
personal compensation for my services, and aren't tied to any school of thought
other than that unlicensed, and therefore lacking credibility people like you
should stop giving other people dangerous advice.
BTW,
have you even read any books on how to evaluate clinical studies for relevancy,
validity, accuracy, etc.? If so, which ones?
Now
let's turn to your insults such as "disgrace…foolish…uninformed." You
are obviously the defensive one as you chose to insult as opposed to just
answer my question and engage.
It's
a shame that you don't have a license, in which case I could notify the
appropriate authorities and have you censured for presenting science fiction as
science. But as this is a free country, you have the right to spew forth your
diatribe, regardless of how inaccurate, misdirected, and meaningless it may be.
As
to your question, "what is prevention?", the answer depends on what
level you are referring, primary, secondary, etc. I believe in primary
prevention, which is based on lifestyle modification. I always prescribe
dietary changes and other lifestyle adjustments before drugs for high blood
pressure, obesity, depression, pre-diabetes, etc.
The
bottom line is you decided to insult the wrong person who actually gets it and
practices it clinically every day.
Finally,
I will say it again. Supplements have no role to play until such role is
defined by a knowledgeable physician who has done an appropriate evaluation. To
do otherwise, is to put people at risk unnecessarily.
To
your health,
Steve"
Beware of Bill Sardi.
Update as of March 21, 2013
Bill Sardi or someone working on his behalf sent me two copies of his book, The New Turth About Vitamins & Minerals. On the cover of the book, he displays Purity's Perfect Multi, the multivitamin he sells. The entire book is dedicated to persuading the reader that if you want a quality multivitamin, only he sells it. In fact, in the back of the book, Sardi includes a survey of multivitamins where he grades the major brands out of 100 points. Not surprisingly, his product gets a 96, with the next closest product is graded 68 out of 100, with the numbers dropping fast from there.
Out of curiosity, I started reading the book, but had to stop when I realized that although he occasionally quoted some reasonable studies, many were studies done in animals, which hold little relevance to humans. The book was the most self-serving book I have ever tried to read. After a few pages of copious notes, I had enough.
Again I caution, beware of people telling you how great are the supplements they are trying to sell you.