I saw this, too, and was curious since I take Protonix. I see they did this study in England, where people don't get enough sunlight to help their bodies process calcium. I've been looking around, and cannot find a link to this study. I'd like to read it myself, rather than just rely on the MSM for a McNews version of it.
Here is the abstract. You have to buy the full article (or request a reprint from the author and wait for it).
http://jama.ama-assn.org/cgi/content/abstract/296/24/2947