big article. Do you have any conclusions ?

Such prejudices aside, there are physiological reasons why go players should worry about heart disease: strategy games do put stress on the heart. I don't remember where I read it, but a chess player's heartrate is likely to be somewhat elevated during a tournament. (Stands to reason.) Part of being a good go player is not stressing out about things too much, about calmly reading the whole situation. And a lot of how you do that is by practicing at go itself. But it also stands to reason that part of how you can not stress out is by being fit and calm to begin with. Athletes tend to have a lower resting heart rate than non-athletes. Perhaps go players who work out enough to have this athlete's heart can keep their cool better in tense games, because their hearts are conditioned to beat slow and strong.

Of course, a lot of that article was definitely odd. I don't think that go players (or chess players) have unique nutritional needs, and I don't think they need to go to specialty shops to have them met. I think garlic is good for just about anyone's health, unless they don't like garlic, and I don't think that anyone needs to eat salmon or other animal products for optimal health.

That's not true. Kimchi and ginseng are prerequisits for getting stronger.

Citations please? Serious medical studies proving this?

And that's only for casual online games. Imagine more serious tournament games...

And if people are likely to get really deeply into only one hobby at once, other hobbies that they're doing might suffer. I would expect that a random sampling of people who are 1d or higher would be less fit, on average, than a random sampling of amateur tennis players, amateur runners, or Pilates fanatics. I would expect them to be at about the same level as a random sampling of, say, singers or calligraphers. On the same note, if I know that someone is very much into something that's not go, I'll assume that they're just not a very good go player.