Here's how
Incorporating fermented foods (sauerkraut, kefir, yogurt, vinegar, etc) helps increase acidity, feeds good flora, introduces more good flora into the body, and is very nourishing. Eating foods that act as prebiotics helps too (rice bran, yucca, fibers, etc). Fermented foods offer a double punch because many contain prebiotics as well as probiotics (example: coconut vinegar contains FOS, which feed the good dudes).
Eating nothing processed helps too.
Avoid sugar.
Keeps carbs low and sensible. Veggies are great (but too much will be alkalizing...however, these should be the bulk of your carbs). Fibers are important. Fruits only if tolerated, and at a very small amount.
Healthy fats are vital. coconut oil is fantastic, as are almonds, avocados, and EVOO.
Probiotics are essential too...but fermented foods are more "potent." However, with dysbiosis, you can't get enough, it seems!
All good flora helps to produce an acidic environment due to the acetic acid (and other byproducts) they produce as they ferment fibers. Bad flora create an alkaline environment, and their byproducts are toxic.
Thus, increase the good flora! :-)
many people report good results and reversal of many issues with SCD and GAPS diets. I'm still learning more about these. If anyone has more insight on SCD and GAPS, I'd love to hear.