When I see things that are "Trending on Google+" in my stream, is there any useful signal I can send to say "Nope, not interested, stop showing me stuff like this."?

There seems to be a lot of stuff that shows up that is health related (or perhaps more accurately "pseudo-health related") so I choose "Mute" whenever I see this kind of thing, but I'm not sure if that's the right approach to reduce the noise source.

Should I just turn off the "Trending" and "You might be interested in"? Or is "Mute" the best answer available? Or perhaps it does nothing...