Saturday, October 24, 2009

Bad Science

There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance. - Hippocrates,Greek physician (460 BC - 377 BC)

Last time I went to my doctor (M.B.B.S, M.D, PhD!), he examined me for a while and gave me 2 plastic bottles with green and blue caps and filled with mini white spheres, tasting like sugar (they were sugar globes indeed!). Homeopathy, he said, and gave a set of instructions along with the pills. I dutifully discarded the pills, the instructions and finally the doctor!

In the recent times many forms of alternate medicine has become popular; the most popular of them is probably Homeopathy, so much so that even some general practitioners, like my own doctor, of the so called Allopathy (interestingly the terms Allopathy/ Allopathic medicine were coined by Samuel Hahnemann, the founder of homeopathy and considered derogative!) today prescribe homeopathic pills. In most of the cities, every street has a homeopathic practitioner and a long line of patients waiting outside, not the least worried about the practitioner’s credentials.

I have always wondered about the effectiveness of alternate medicine and this wonder led me to Ben Goldacre. Ben Goldacre is a doctor by profession from the Oxford and a celebrated journalist. He has a master's degree in philosophy. He writes a weekly column in the guardian titled ‘Bad Science’ and blogs here http://www.badscience.net/. His recent (Sep 2008) block buster book is titled; you would have guessed it by now – Bad Science. He is just 34.

His columns are very critical of the many pseudo science practices that are popular today. The book is a follow up to the columns and continues the scathing yet witty style of writing, but a style that is very thorough. The book covers a lot of things from detoxification myths to media’s role in the health fads and even large evil pharma companies. Since it covers a lot of ground it is a bit laborious at times and that can surely be excused.

Bad Science has a long chapter dedicated to Homeopathy and followed immediately by a chapter on placebo effect. Ben Goldacre completely debunks the practice of Homeo and writes: “Homeopathy is perhaps the paradigmatic example of an alternative therapy: it claims the authority of a rich historical heritage, but its history is routinely rewritten for PR needs of a contemporary market; it has an elaborate sciency sounding framework for how it works , without scientific evidence to demonstrate its veracity; and its proponents are quite clear that the pills will make you better, when in fact they have been thoroughly researched, with innumerable trails, and have been found to perform no better that Placebo.”

The other book that has received great reviews is the wonderfully titled “Trick or Treatment”; co authored by the other popular British author/journalist (pseudo patriots can take pride in his Indian origins!) Simon Singh. This book is all about alternate medicines and goes all out at Homeopathy and criticizes the two pillars of Homeopathy 1. Like cures like and 2. Dilution increases potency – for more details watch this
video where Simon Singh talks about his book and Homeopathy in detail (you have to tolerate his weird hairstyle ;-)).

Both the books argue based on meta studies based on rigorous trials and the outcome of these trails have been fairly conclusive in terming homeopathy as no better than Placebo.

If Homeopathy is no better than Placebo, then why is Homeo so popular today? It is a good question, and the answer lies in the power of Placebo and the desperation of people when mainstream medicine (still) has no answer to many of today’s ills (we have to remember that mainstream medicine has only taken off in the last 70 odd years after the start of proper clinical trials and advancement in science - otherwise it was no different from the pseudo medicine and followed practices like bloodletting for cures for more than 2000 years).

Placebo is usually a non medicinal substance (like sugar pill, saline water, etc); that will have no effect on the illness, but administered to the patient. The patient believes that the substance has medical value and at times his condition improves, purely based on psychological stimulus.

Many trials have proved the effectiveness of placebo; especially when the Doctor is confident and sounds very honest and caring. Tests have proved that the color, shape (capsules are more powerful than tablets), the brand (Crocin seems to be more effective even though there are hundred other Paracetamol tablets available in the market). In all this, the elobrate ritual and props are very important.
The power of Placebo effect can be seen in the many other beliefs like: astrology, spiritual gurus, good luck gems, etc. and of course, the biggest of them all – God.

3 comments:

  1. Krishna,

    Thanks for introducing this new book.

    It was interesting to read. The last line was wonderful and had a laugh...

    Alternative medicines can "cure" small time problems which would otherwise disappear even if it is left untreated, like cold, allergies, mild asthma etc. Real chronic diseases - they cannot do a shit about it.

    IMO, If allopath practice concentrates on their roots and start looking at holistic picture including life style changes, dietary changes and then try to treat with pills - then we may not even need alternate practices.

    This will not happen because of 2 reasons:

    1. Patients are generally not ready to make changes (whatsoever) but ready to take pills (how many ever).
    2. Doctors go by what Pharma companies say as a treatment to a given medical condition; Certainly pharma companies will not suggest patients with cold to supplement Vitamin C thru lemon. They will give a prescription medicine.

    One problem with these alternate practices are - there are far more quacks than real doctors. Thats ok, when the alternate medicine they practice itself is quackery, we do not have to worry just about quacks.

    Thanks, Venkat

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  2. Krishna.. Wonderful flow and titles. Science can answer "How" not "Why" :)

    People will follow whichever method it works for them. My friend [ Homeopathy doctor ] admits only certain types can be treated under Homeo [ For ex., an accident/trauma case cannot be taken by a Homeo doctor, whereas he can treat allergy in which allopathy can only pacify with Cetrizine]. Allopathy has converted disorders into diseases.

    I too have asked the same question to Homeo dr whether he just gives sugar pills. He answered that he would be a multi-millionaire if he treats just with sugar pills and psychology. Your "other beliefs" list miss..energy effect, nameology, vaasthu, pyramid, sithars etc. :). There is one disorder which no branch of science can even touch or cure - DEPRESSION.

    There's a short story of Sujatha which deals the life of a doctor from alternate medicine - the story ends that the doc secretly visits allopath for his problems. :)

    Venkat.. Your points are very valid.

    -Visu.

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  3. Antony8:16 PM

    Krishna,

    This a good article, but i defintely have different view on this.

    Until about 2 years back i was never in favour of homeo or visited a clinic. Though i don't trust it fully, it can certainly have some effects on controlling cold,allergy etc. Example It certainly cured my son's from allergy problem where allopathi was not able to do for nearly 18 months (We have seen even best doctors in chennai). Though we might tell palacbo at the end of the day ; what you have achieved out of it matters.

    Antony

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