GIG Gluten Intolerance Group The Gluten Intolerance Group®, also known as GIG®, is a 501(c)(3) non-profit organization funded by private donations including the Combined Federal Campaign, United Way Designated Giving, Employer Matching Funds; proceeds from memberships, the sale of products and our educational resources. We rely on your contributions, which are tax deductible. 85% or more of our revenue is used to support our programs. We are led by a Board of Trustees, and GIG's Medical Advisory Board approves all education materials. GIG provides information, education and support to those with celiac disease (CD) / dermatitis hepetiformis (DH), their families, health care professionals, and the general public. celiaccoeliacdermatitisdietdigestivediseasediseasesfreeglutenherpetiformisintolerancespruesupport in Celiac > Groupswith celiac-diseasegluten-intolerancegroupinformationreference