Mass medication with Omega 3 would wipe out global fish stocks
News Desk
to cattle and pigs there simply aren't enough left
George Monbiot
Tuesday June 20, 2006
The Guardian
The more it is tested, the more compelling the hypothesis becomes.
Dyslexia, ADHD, dyspraxia and other neurological problems seem to be
associated with a deficiency of Omega 3 fatty acids, especially in the
womb. The evidence of a link with depression, chronic fatigue syndrome
and dementia is less clear, but still suggestive. None of these
conditions is caused exclusively by a lack of these chemicals, or can
be entirely remedied by their application, but it's becoming pretty
obvious that some of our most persistent modern diseases are, at least
in part, diseases of deficiency.
Last year, for example, researchers at Oxford published a study of 117
children suffering from dyspraxia. Dyspraxia causes learning
difficulties, disruptive behaviour and social problems. It affects
about 5% of children. Some of the children were given supplements of
Omega 3 and Omega 6 fatty acids, others were given placebos. The
results were extraordinary: in three months the reading age of the
experimental group rose by an average of 9.5 months, while the reading
age of those given placebos rose by 3.3. Other studies have shown major
improvements in attention, behaviour and IQ.
This shouldn't surprise us. During the Palaeolithic era, humans ate
roughly the same amount of Omega 3 fatty acids as Omega 6s. Today we
eat 17 times as much Omega 6 as Omega 3. Omega 6s are found in
vegetable oils, while most of the Omega 3s we eat come from fish. John
Stein, a professor of physiology at Oxford who specialises in dyslexia,
believes that fish oils permitted humans to make their great cognitive
leap forwards. The concentration of Omega 3s in the brain, he says,
could provide more evidence that human beings were, for a while,
semi-aquatic.
Stein believes that when the cells that are partly responsible for
visual perception - the magnocellular neurones - are deficient in Omega
3s, they don't form as many connections with other cells, and don't
pass on information as efficiently. Their impaired development
explains, for example, why many dyslexic children find that letters
appear to jump around on the page.
So at first sight the government's investigation into the idea of
giving fish oil capsules to schoolchildren seems sensible. The food
standards agency is conducting a review of the effects of Omega 3s on
behaviour and performance in school. Alan Johnson, the secretary of
state for education, is taking an interest. Given the accumulating
weight of evidence, it would be surprising if he does not decide to go
ahead. Already companies such as St Ivel and Marks & Spencer are
selling foods laced with Omega 3s.
There is only one problem: there are not enough fish. In March an
article in the British Medical Journal observed: "We are faced with a
paradox. Health recommendations advise increased consumption of oily
fish and fish oils within limits, on the grounds that intake is
generally low. However ... we probably do not have a sustainable supply
of long-chain Omega 3 fats." Our brain food is disappearing.
If you want to know why, read Charles Clover's beautifully written book
The End of the Line. Clover travelled all over the world, learning how
the grotesque mismanagement of fish stocks has spread like an
infectious disease. Governments help their fishermen wipe out local
shoals, then pay them to build bigger and more powerful boats so they
can go further afield. When they have cleaned up their own continental
shelves, they are paid by taxpayers to destroy other people's stocks.
The European Union, for example, has bought our pampered fishermen the
right to steal protein from the malnourished people of Senegal and
Angola. West African stocks are now going the same way as North Sea cod
and Mediterranean tuna.
I first realised just how mad our fishing policies have become when
playing a game of ultimate frisbee in my local park. Taking a long
dive, I landed with my nose in the grass. It smelt of fish. To the
astonishment of passersby, I crawled across the lawns, sniffing them.
The whole park had been fertilised with fishmeal. Fish are used to feed
cattle, pigs, poultry and other fish - in the farms now proliferating
all over the world. Those rearing salmon, cod and tuna, for example,
produce about half as much fish as they consume. Until 1996, when
public outrage brought the practice to halt, a power station in Denmark
was running on fish oil. Now I have discovered that the US department
of energy is subsidising the conversion of fish oil into biodiesel,
through its "regional biomass energy programme". It hopes that fish
will be used to provide electricity and heating to homes in Alaska. It
describes them as "a sustainable energy supply".
Three years after Ransom Myers and Boris Worm published their seminal
study in Nature, showing that global stocks of predatory fish have
declined by 90%, nothing has changed. The fish stall in my local market
still sells steaks from the ocean's charismatic megafauna: swordfish,
sharks and tuna, despite the fact that their conservation status is
now, in many cases, similar to that of the Siberian tiger. Even the
Guardian's Weekend magazine publishes recipes for endangered species.
Yesterday, the European Fisheries Council reversed the only sensible
policy it has ever introduced. Having dropped them in 2002, it has
decided to reinstate subsidies for new boat engines. Once again we will
be paying billions to support overfishing. Franco rose to power with
the help of the whalers and industrial fishermen of his native Galicia.
Somehow the old fascists in Vigo - the centre of the European
industry's power - still seem to exercise an extraordinary degree of
control.
If fish stocks were allowed to recover and fishing policies reflected
scientific advice, there might just about be enough to go round. To
introduce mass medication with fish oil under current circumstances
could be a recipe for the complete collapse of global stocks. Yet
somehow we have to prevent many thousands of lives from being ruined by
what appears to be a growing problem of malnutrition.
Some plants - such as flax and hemp - contain Omega 3 oils, but not the
long-chain varieties our cell membranes need. Only some people can
convert them, and even then slowly and inefficiently. But a few weeks
ago, a Swiss company called Eau+ published a press release claiming
that it has been farming "a secret strain of algae called V-Pure" that
produces the right kind of fatty acids. It says it's on the verge of
commercialising a supplement. As the claims and the terrible names put
me in mind of the slushiest kind of New Age therapy, I was, at first,
suspicious. So I went to see Professor Stein to ask him whether it was
likely to be true.
He could be said to have a countervailing interest: his brother is the
fish chef Rick Stein. But he had met the company's founder the day
before, and was impressed. The oils produced by some species of algae,
he told me, are chemically identical to those found in fish: in fact
this is where the fish get them from. "I think they're fairly
optimistic about the timescale. But there is no theoretical impediment.
I haven't yet seen his evidence, but I formed a very strong impression
that he is an honest man."
He had better be, and his project had better work. Otherwise the human
race is destined to take a great cognitive leap backwards.