[amelius]

You can also take cod-liver oil, like people did in the old days.

That will give you vitamins A and D, and the essential omega-3 fatty acids DHA and EPA.

[klodolph]

Yeah, but the utility of taking those other supplements is not well substantiated. That's not to say that the utility of taking vitamin D is very well substantiated either, but at least there is some good evidence that suggests that it is.

[amelius]

Well, as the article shows, we don't know everything about nutrition yet. So, the wisest thing to do might just be to eat what our ancestors ate (if science does not tell us it is harmful of course).