It's sad to see them conclude that lifestyle plays little role because some people are not affected by bad lifestyle.
Yeah, my comment above was tongue-in-cheek... even my friend would probably agree that his lifestyle may have something to do with it, even though his genetics may have played a role at developing it.
Likely, if one were to read the original article, this kind of conclusion would not appear. The language would be much more hedged. It's the papers vulgarizing and reporting on the academic papers that tend to make these generalizing conclusions at the cost of accuracy.
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