My student interview is doing it, and we talked quite extensively about her experience. Apparently, the summer semester is super hectic and condensed. So, for sure...it's definitely stressful. Classes also begin the first Monday of June, so you're basically sacrificing your last summer of free time. If you're going to do the MD/MPH, the MPH component, it has to be something you really, really want to do. Many students end up finishing the entire program up in 5 years, instead of 4 (according to our student ambassadors). I wasn't able to get a straight answer as to why, but that's something to take into consideration when deciding to pursue this path. Despite this rant, I say go for it! I'm doing an MPH now and love it (just can't imagine doing it during medical school).