Homeopathy Awareness Week: The facts of life

[BPSDB] Here’s a description of the process for producing a homeopathic remedy, as described on Wikipedia:

…homeopaths use a process called “dynamisation” or “potentisation” whereby the remedy is diluted with alcohol or distilled water and then vigorously shaken by ten hard strikes against an elastic body in a process called “succussion”. … During the process of potentisation, homeopaths believe that the vital energy of the diluted substance is activated and its energy released by vigorous shaking of the substance.

… A 2C dilution requires a substance to be diluted to one part in one hundred, and then some of that diluted solution diluted by a further factor of one hundred. This works out to one part of the original solution mixed into 9,999 parts (100 × 100 -1) of the diluent. A 6C dilution repeats this process six times, ending up with the original material diluted by a factor of 100-6 = 10-12. Higher dilutions follow the same pattern. In homeopathy, a solution that is more dilute is described as having a higher potency, and more dilute substances are considered by homeopaths to be stronger and deeper-acting remedies. The end product is often so diluted that it is indistinguishable from the dilutant (pure water, sugar or alcohol).

Now for some real science, what you learn in chemistry at school. A ‘mole’ of any substance – for water 1 mole is 18 grams – contains approximately 6 × 1023 molecules of the substance, that’s 6 followed by twenty-three zeros (6 × 1023 is called the Avogadro constant).

That seems an awfully large number of molecules, but if you carry out the homeopathic dilution you soon reduce the concentration of the substance to effectively nothing. Suppose you start the homeopathic preparation with about a tenth of a mole of the active ingredient in 100 ml, by the time you have a 12C remedy (diluting by 100 twelve times) there is only, on average, approximately one molecule in every 100 ml. Homeopaths typically use 30C or even 200C solutions. Once you get to those dilutions, there is absolutely no chance of finding any of the original remedy in a sample. Such a homeopathic remedy consists only of the inert basis substances (water, alcohol, sugar, chalk etc.) that are used for making the dose or pill, like the placebos that clinicians use in tests.

Kate Chatfield of the Society of Homeopaths was asked by a House of Lords Select Committee:

“Is it possible to distinguish between homeopathic drugs after they have been diluted? Is there any means of distinguishing one from the other?”

She replied:

“Only by the label.”

Exactly.

Nevertheless, homeopaths still claim that the dilution process somehow makes a “remedy” more effective, even hinting at danger if the “strong” remedies fall into untrained hands. How this happens appears to be magic, the same way magic happens in the Harry Potter books. A few more scientifically-minded homeopaths have tried to come up with a pseudoscientific explanation called “memory of water”, but they have yet to put even a proper theory to this name, let alone find any evidence that it exists.

For the sake of argument, let’s just assume that the homeopaths are right, and that succussion does turn the material that you started with into an effective “remedy”. By the homeopathic “principle” that “like cures like”, the homeopathic solution should produce the symptoms of the disease that the “remedy” is used to treat.

In practice, even the very purest available water contains parts per trillion or parts per billion of numerous impurities. These chemical substances are in the water because the world we live in is made out of chemicals (they are not necessarily man-made pollution). Typical impurities would be common ions like sodium, chloride (that is, salt), calcium, magnesium,  iron and sulphate. There are likely tens of thousands of impurities in the form of molecules and ions at this level or lower. We don’t expect homeopathic “remedies” to be prepared with water this pure, which is expensive water used for chemical analysis and other experiments in labs requiring high accuracy. We happily drink water with higher levels of impurities than this – at those levels they have no significant affect on the human body.

So, even if a homeopathic “remedy” is prepared with the very purest available water, there may still be something like 1012 (1,000,000,000,000) molecules each of numerous impurities in a 30C or a 200C remedy and this level cannot be reduced. Of those molecules, some molecules of each impurity have been through the whole dilution/succussion cycle, so the impurities have been “potentised” too. So a homeopathic “remedy” ought actually to deliver the effect of many thousands of uncontrolled chemical substances. Fortunately it doesn’t – imagine drinking potentised Epsom salts. That’s because the whole idea of “potentising” is nonsense.

Even worse, if homeopathy were true, it would be potentially one of the most polluting industrial processes. Suppose the homeopath dilutes a commercial 6C “remedy” to 30C for a patient, each time diluting 1 ml to 100ml. Each stage generates 99ml of by-product, each more “potentised” than the next. That’s 24 × 99 ml, almost two and a half litres of stuff that supposedly will induce symptoms, and more than enough for treating the most hypochondriac of patients. It’s even worse for a 200C remedy – you would have almost 20 litres to dispose of.  How much of this strong magic water is flushed away and finds itself back in our water supply?  Fortunately, you could drink a lot of 200C and the only symptom you would get is a strong desire to pee.

The homeopathic manufacturer Helios has a catalogue that is good for a laugh. It consists mainly of lower “potencies” that your friendly local homeopath can make into “remedies” for you. Helios’s Excrementum can, for example, presumably does actually contain a small amount of dog shit. Sooner you than me. Marc Abrahams has more about this.

Yes. Be aware  of homeopathy. It’s homeopathetic nonsense.

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