laravel get eloquent data using its relations Ids

I have three main mySQL tables:

• users
• tags
• news_articles

I also have many to many tables to connect them as needed.

I want to grab all the articles that share the same tags as users so I can personalise their experience.

(example): say a user has tags for "Trump" or "Brexit" I want to grab all the news articles that also have Trump or Brexit.

I could grab the whole data pool and make calculations but that might get unnecessarily server intensive so is there a way of doing it through Eloquent?

Also is Eloquent capable of tallying the user tags to determine which tags the user is most interested in before grabbing the articles or would that need a workaround after?

Thanks in advance.

via Chebli Mohamed