From NHS Choices.
“Ditching butter for veg oil may not be better for heart,” the Daily Mail reports.
An analysis of previously unpublished data from the 1960s and 70s found no benefit in replacing sources of saturated fats with vegetable oils.
The original study was conducted from 1968 to 1973 in six US psychiatric state hospitals and a nursing home. People were randomly assigned to eat a diet that switched saturated fat with vegetable oil rich in linoleic acid, or a control diet including saturated fat plus linoleic acid for about a year. Researchers looked at the data from more than 2,000 participants over a maximum follow-up period of four years.
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