Help optimizing sub query

This query fetches news articles that are tagged similarly to other news articles. Is it possible I can eliminate one of these subqueries that I'm not seeing?

SELECT id, 
       title, 
       comment_count
  FROM NEWS
 WHERE (franchise_id = 1 OR franchise_id = 0)
   AND draft = 0
   AND id != 459
   AND id IN (SELECT news_id
              开发者_如何学Go  FROM news_tag_association
               WHERE tag_id IN (SELECT tag_id
                                  FROM news_tag_association
                                 WHERE news_id = 459))                               
 LIMIT 0, 5;

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Yes, there is no GROUP BY or similar, so you can use normal self-joins:

SELECT
    id, title, comment_count
FROM news
JOIN news_tag_association n2t1 ON (news.id = n2t1.news_id)
JOIN news_tag_association n2t2 ON (n2t1.tag_id = n2t2.tag_id)
WHERE franchise_id IN (0, 1)
    AND draft = 0
    AND id != 459
    AND n2t2.news_id = 459
LIMIT 0,5;