The concept of the memory of water goes back to 1988 when the late Professor Jacques Benveniste published, in the international scientific journal Nature, claims that extremely high ‘ultramolecular’ dilutions of an antibody had effects in the human basophil degranulation test, a laboratory model of immune response.

In other words, the water diluent ‘remembered’ the antibody long after it was gone. His findings were subsequently denounced as ‘pseudoscience’ and yet, despite the negative impact this had at the time, the idea has not gone away.

The concept of memory of water is important to homeopathy because it offers a potential explanation of the mechanism of action of very high dilutions often used in homeopathy.



Writing in the journal Homeopathy, Professor Martin Chaplin of the Department of Applied Science at London South Bank University, remarks: “There is strong evidence concerning many ways in which the mechanism of this ‘memory’ may come about. There are also mechanisms by which such solutions may possess effects on biological systems which substantially differ from plain water.”

He notes that scientists from the Czech Republic, France, Germany, Italy, Russia, USA as well as the UK present remarkably convergent views from groups using entirely different methods, indicating that large-scale structural effects can occur in liquid water, and can increase with time. Such effects might account for claims of memory of water effects.

Said Chaplin; “Science has a lot more to discover about such effects and how they might relate to homeopathy. It is unjustified to dismiss homeopathy, as some scientists do, just because we don’t have a full understanding of how it works.”

In his overview he is critical of the “unscientific rhetoric” of some scientists who reject the memory of water concept “with a narrow view of the subject and without any examination or appreciation of the full body of evidence.”