Gluten-Free Diet:
http://en.wikipedia.org/wiki/Gluten-free_diet
http://www.mayoclinic.com/health/gluten-free-diet/MY01140
Lactose-Intolerance:
http://en.wikipedia.org/wiki/Lactose_intolerance
http://digestive.niddk.nih.gov/ddiseases/pubs/lactoseintolerance/
http://www.medicinenet.com/lactose_intolerance/article.htm
Glycemic Index:
http://www.diabetesnet.com/food-diabetes/glycemic-index
http://diabetes.webmd.com/glycemic-index-good-versus-bad-carbs
Sugar -Free Diet:
http://www.medicinenet.com/script/main/art.asp?articlekey=47148