Extra glass of wine a day 'will shorten your life by 30 minutes'

Oh, can we have no fun anymore?

This will change again in six months. It's not worth paying attention to any of these studies until there's a critical mass of them saying the same thing

This was a meta-study, not an actual study. So the studies used won't change, what might happen is that another meta-study will come along that will interpret the data differently. So for stuff like this it comes down to methods. There is no point to waiting for more data if you accept the methods used in this meta-study. There is lots of data, perhaps even too much...