They show negative health effects from prolonged sitting. The "prolonged" part is important.
Standing desks are fine if you are using one because you like it better than sitting, and are aware that there are health problems associated with too much standing.
For those considering standing just because of the health problems of prolonged sitting a much simpler way to avoid those problems without exchanging them for the different set of health problems from prolonged standing is to set a timer to remind you to take a short break every 20-30 minutes. During that break get up and move around for 2 or 3 minutes--you don't have to do anything vigorous for this, just taking a walk around the office will do [1].
It's interesting to note that the common time interval used by people using the Pomodoro time management system [2], 25 minutes, fits in very well with the above recommendation.
It is one of the reasons I'm looking to work while walking in nature. It works for 50% of my work load currently (meetings and project discussions / management tasks) but for coding I still need a computer. I am getting there though; my ideas for mobile coding, mobile internet and voice recog are getting better and faster. The biggest challenge is how to make overviews; there is no way to browse through code easily on a small screen so I make overviews in different ways and that part I have not managed to tackle comfortably at all.
I cannot recommend this enough for anyone sitting in front of computers > 4 hours / day.
Now looking to get a setup with an overhead bar so that I can do some some additional arm exercises (pull ups, etc.). I already keep two free weights within easy reach.
There's nothing wrong with milk, unless you're not including it in your diet tracking, react poorly to it, or have a personal opposition to drinking it.
