Of course I don't have an answer. But I guess you'd have to ask how Bob might have become first conceived of the thought that fish oil supplements are good for

Of course I don't have an answer. But I guess you'd have to ask how Bob might have become first conceived of the thought that fish oil supplements are good for heart health in the first place and ask why he puts faith in the source of that information. I think a lot of it is carried by word of mouth, which I think just innately tends to carry more weight with us as humans then the conclusions of some nameless scientists, but that's just speculation.