For 50 years we have been told to cut down on lard and butter while eating more sunflower oil and margarine.
The dietitians’ rule of thumb has been saturated animal fat = bad, polyunsaturated vegetable fat = good. But
now US scientists are questioning the conventional wisdom, and asking
whether margarine might have been more harmful for us all along.
down on saturated animal fat lowers cholesterol and thus reduces the
risk of heart attack. However, the new analysis of a study conducted in
the late 1960s and early 1970s, some of the data from which had been
missing for decades, has revealed that people who followed the standard
advice and substituted margarine in place of butter died sooner than
those who made no change to their diet.
The researchers from the National Institutes of Health in the US say in the British Medical Journal that their findings could have “important implications for
worldwide dietary recommendations.”
The US scientists decided to
re-investigate a heart study conducted in Sydney, Australia, between
1966 and 1973, because it was the only randomised controlled study to
examine the impact of increasing consumption of omega 6 polyunsaturated
fatty acid, also known as linoleic acid.
Source - Independent