Somehow, it seems to me that these topics are in constant flux, and something 'radical and latest' is discovered quite often which makes you scamper to upgrade. (I guess if one is a web front end developer, this feels like home.) I also dislike reading pop-health and taking life advice from so called experts in general, so I stopped reading these topics many years back. I follow a simple healthy balanced diet, which is more common sense than carefully scientifically crafted, remain stress free as much as possible, do moderate exercise regularly (not bodybuilding etc) and get enough sleep. Every now and then I look up some nutritional information but that's it. As they say, don't fix it if it ain't broke.
As for learning about health issues like diseases etc, I usually read reputable sources like mayo clinic or www.ncbi.nlm.nih.gov or www.nhs.uk. One of these is bound to answer my queries.