Cala,
I haven't tried the phosphorus, but I do love my naturopathic doctor! It took me a couple of tries, but I found a good one! She has written articles by Dr. Mercola's website, and Dr. Mercola has written the foreword on her new book. To make a long story short, I was sick off and on for 9-10 months, trying to eat well, taking only natural remedies. I saw a naturopath and all she did is take my money! So then I tried a MD because I was sick of being sick and wanted to make sure I wasn't dying or something, and he didn't help me at all. So then I finally found this doctor. I had heard her speak at Whole Foods before and I knew she was smart. And she was. One visit with her and I have not been sick since! That was back in September of 2006.
So anyway, I hope the naturopath can help you. If not, seek a 2nd or 3rd opinion!