WebMD also had this article. There is one paragraph that I think is key to the article.

“Although this study found an association between mental illness and an increased risk of premature death, it did not prove that mental illness causes early death.”

We are talking about statistics here, which that paragraph is highliting. There are many questions that need to be answered on how the statistics were determined before it’s claim is relevant at all to a person with MI. Even then, we still are talking about probabilities.