We bought a juicer (mainly for our kids because we can make natural juices with no preservatives etc.); anyways so I started to make lots of juices. My favorite so far is actually cucumber juice. I usually blend up 4 cucumbers, two lemons (sometimes a carrot) and throw it in the blender with crushed ice and some splenda. It’s refreshing, tastes great, and has a ton of health benefits including lowering blood pressure (I’m probably beginning to sound like Dr.Oz or Rachel Ray so I’ll stop here.)
I can’t speak with regards to PH’s though, but I think the right blend of healthy fruits and veggies should have a positive effect keeping everything healthy on the inside.