serotonin levels

Hi,
I think after reading Potatoes Not Prozac that it may be the right program for me. Recently I went to see a Nautropath for sugar addiction and depression. She put me on 100mg. once/day of St. John's Wort. The first night I had very wild vivid dreams. She said that this meant my serotonin levels were fine and I didn't need it. I scored 100% on the sugar sensitivity questions and did NOT laugh at the chocolate chip cookie question. And, I re-filled my PILLOWCASE twice on Halloween! I really fit the profile, but apparently do not have low serotonin levels. Is PNP the right program for me to embark on?
Thank you,
Sandy