The claim that giving up reading news will make you happier is a medical claim in the article that is not backed up by reliable medical sources,[1] so I call baloney on that. The newspaper opinion writer here (promoting his new book with excerpts from the book) doesn't report the issue the way a competent reporter would report it, but just makes a bunch of broad general statements with no nuance. In other words, the medical claims about happier human life in the article are just like the made-up opinions we can all easily find on the Internet, and the article stands as an example of how we can find blatantly misleading "information" inside or outside the professional news media. I have no reason to suppose that the full-length book is a medically reliable source (the publisher of the book is identified at the end of the article).
Anecdote alert: I'm a curious person and I like to learn, and so one of the reasons I come here to Hacker NEWS is to find out new facts about the external world that I didn't know before, including facts about current events ("news" in the narrow sense). My personal experience—which, to be sure, may differ from yours—is that I am a happier and more productive person when I know, from good sources, what is going on all over the world and the broader context of expanding human knowledge. But I'm sure you can find an opinion column somewhere based on a popular book with a different opinion from mine.
AFTER EDIT: Good catch! Another participant here on HN noticed that the author of the article kindly submitted here has credibly been accused of plagiarism by more than one published author who works harder than he does. I upvoted that comment for what it added to our understanding of the article's background.