I think the sugar cravings are related to serotonin being low. St. John's Wort helped me greatly in reducing my cravings for chocolate. Others use prescription antidepressants instead. They can't both be used at the same time. If someone is on any prescription drugs they should consult with their physician first before taking ST. john's Wort. The main side effect of St. John's Wort is sensitivity to sunlight. Those taking it should limit their sun exposure and wear sunglasses outdoors during the day. Many people tend to sunburn much easier while on St. John's Wort.

I found these articles by searching Google with sugar serotonin. There are many more such articles.

http://www.womentowomen.com/symptoms/cravings.aspx
http://www.mcmanweb.com/article-152.htm


One other thing. There were articles about chronic fatigue syndrome which mentioned studies that many people felt increased energy by increasing their salt intake. Increasing my salt intake has helped me.