Overturning Previous Science, After Roughly a Half Century

Science true believers won't internalize this, because for them what "experts" declare is truth. This goes contrary to a life time of false belief, and thus is cognitively disabling due to directly refuting prior "truth". If science produces truth, how can that truth be... not true?

It's because science never produces truth, it produces contingent factoids which are always, always susceptible to future refutation by subsequent improvement in technology and techniques.

Here is the "interpretation" from the study's introductory text:

Associations of fats and carbohydrate intake with cardiovascular disease and mortality in 18 countries from five continents (PURE): a prospective cohort study

Interpretation

High carbohydrate intake was associated with higher risk of total mortality, whereas total fat and individual types of fat were related to lower total mortality. Total fat and types of fat were not associated with cardiovascular disease, myocardial infarction, or cardiovascular disease mortality, whereas saturated fat had an inverse association with stroke. Global dietary guidelines should be reconsidered in light of these findings.

Apparently they didn't study the relationship of fats to "fat-heads". More's the pity...