I grew up by the sea and often tell people that the ocean is in my blood. Recently I came across some fascinating old research that made me think that this is true in a far more literal sense than I had ever thought possible.
The research dates back to the early 1900s and was conducted by French biologist and self-taught physician Rene Quinton. In analyzing the composition of human plasma and that of ocean water, and superimposing the two, Quinton observed that they are virtually identical – the only real difference between the two being that ocean water is three times more concentrated than plasma.
Quinton attributed this difference to the fact that, since life originated in the ocean millions of years ago, seawater has become more concentrated. His conclusion was that we all still carry original ocean water in our blood. Human (and animal) plasma, in his view, is a “marine environment.”
To prove his point Quinton carried out a series of experiments that later came to be known as the “dog studies.” Though we are no longer accustomed to studies being performed on dogs, in his day dogs and cats were often used for medical research.
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