TEXTO:
We should eat at least two portions of fish, one
oily, a week according to the Department of Health
guidelines first issued in 1994. This was based on a
review of scientific evidence that related fish
[5] consumption inversely to coronary heart disease.
The focus on oily fish and ω3s is thought to
date back to the Seventies when researchers observed
that Inuit and Eskimo populations ate a lot of fish and
also had among the lowest rates of heart attacks, says
[10] Professor Sanders. The theory was that diets high in
ω3 could block the effects of thromboxane, a
hormone in the blood, reducing the risk of clots. The
Inuits and Eskimos were also found to get a lot of
nosebleeds, suggesting their blood clotted less readily.
[15] No studies have proven clearly that we need one
portion of oily fish a week. One of the few studies to do
so, the DART study in 1989, concluded that two or three
portions of fatty fish a week may reduce mortality in
men after a heart attack. But when they tried to test
[20] this finding in a larger study, it couldn’t be replicated.
“Eating oily fish once a week is associated with a lower
risk of cardiovascular disease, but it is difficult to
attribute this to the relatively small amounts of ω
3 provided by a single serving,” says Professor Sanders.
[25] And a Cochrane Review in 2004 that looked at
heart benefits concluded: “It is not clear that dietary or
supplemental ω3 alter total mortality, combined
cardiovascular events or cancers in people with, or at
high risk of, cardiovascular disease or in the general
[30] population.”
WE SHOULD EAT...Disponível em: www.dailymail.co.uk/health/ article-4287222/Exposed-truth-great-health-myths.html. Acesso em: 13 jun. 2018.
The DART study in 1989
