4 karma · joined December 30, 2016
It's true that we're still making sense of how to operationalize those observations (restrictive diet, exercise, statin therapy, etc). This doesn't make the science worthless; it's just an intermediate step in this particular area of research.
The reason we have these publications is that medicine is continually reevaluating its recommendations. Your statement is about as unreasonable as saying 'we don't need computers since sometimes computers stop working'.
Also, if you've ever spoken to a doctor about this, few would disagree that nutrition is an area where we still need more research.
Finally, ask yourself: in the absence of evidence, is a diet that avoids fats/cholesterol (which, a priori, are associated with heart vessel disease[1]) such a silly idea? Now, we know more, and are changing recommendations accordingly.
1. https://www.nhlbi.nih.gov/health/health-topics/topics/athero...
1b. (in case you don't trust a governmental source) https://en.wikipedia.org/wiki/Atherosclerosis