Whether social channels are used for news is of critical importance for marketers in technical fields such as healthcare. The acquisition of news in these channels indicates both a level of convenience and trust that is otherwise hard to measure.
The story has a lot more detail, but overall it points the way to a ranking of social channels to consider for your outreach projects. The story also has a breakdown of demographics of the different channels that can further help define the relevance for your own audiences.
Source: PEW Research