How much alcohol can you drink safely?

> The results, however, also show that a serving of alcohol every day slightly lowers the risk of certain types of heart disease — especially in developed countries, where people are much more likely to live long enough to get it.

Statements like this are so frustrating. Correlation doesn't imply causation -- repeat it until you're blue in the face, and still people write this.

I understand technically parsing that sentence, it never actually says 'causes', a casual reading of it clearly implies it.