If you have had significant dairy allergies in the past, I would immediately cut out all dairy products. There is no reason to eat dairy products, since you can receive ample amounts of calcium from dark, leafy greens. Remember that we are the ONLY mammal on earth that ingests the milk of other creatures. The most important thing to cut out is sugar . This includes all cookies, candies and anything else of that nature.
Yeast feeds off sugar and the only way to keep it at bay is to starve it.
This might be hard, considering that your body has been feeding off of it for so long, but it's the only way. If you cheat and have a candy bar, don't expect to feel alright ten minutes later. Caffeinated items are also very strenuous on the bladder, the stomach and the prostate. All refined white flours and grains should be removed from the diet, too. The only way to tell is to do a taste test.