Here's the HN discussion of the "Dead Men Write No Code" article, which this article references:
Tea is good, but Brits overdo black tea; just do black/green/red or skip the black altogether and go easy on the red. And no milk ofcourse although that's probably the hardest part to leave out.
Eat more vegetables. Visit the doctor to get a blood test.
There are studies showing that a lot of the negative health effects can be attributed to just the sitting, regardless of the amount of exercise[1]. Personally I can really recommend looking into the standing desk. Also great if you tend to get kinda restless after sitting up for long periods, like me.
[1] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3404815/