Before the government told everyone to eat less fat, no study had actually tested whether eating exactly that much fat helped people live longer.

Pro

Against

Evidence from Studies

Supporting (1)

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Evidence from randomised controlled trials did not support the introduction of dietary fat guidelines in 1977 and 1983: a systematic review and meta-analysis

Systematic Review With Meta-Analysis

Human

2015

Before the government told people to eat less fat in the late 1970s and early 1980s, no big scientific experiments had tested whether those exact rules actually prevented heart disease — and this study proves it.

Contradicting (0)

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No contradicting evidence found

Source Study

Evidence from randomised controlled trials did not support the introduction of dietary fat guidelines in 1977 and 1983: a systematic review and meta-analysis

Score: 68

DOI: 10.1136/openhrt-2014-000196

Similar Assertions

Some big studies that looked at lots of people who ate less saturated fat didn’t find that they lived longer or had fewer heart attacks, which makes people question why we’ve been told to avoid foods like butter and cheese for so long.

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