Comment by Aurornis

The Medium blog you linked has 9 citations and none of them are actual scientific research. They're all news articles.

Regardless, the OP doesn't actually claim that cholesterol is not correlated with heart attack risk. If you read the entire article (not just the headline) it has a section explaining that the results are confounded by the fact that many patients were on statins already and therefore had lower measured LDL cholesterol than they would normally have due to their diet and lifestyle.

LDL isn't the only factor in determining heart disease risk. We've known this for a long time. Measuring LDL in heart attack patients can be misleading because it doesn't represent lifetime LDL area under the curve and they are more likely to be on LDL-lowering therapy than people with lower heart attack risk.