A gluten-free diet is a diet that excludes gluten, a protein composite found in wheat and related grains, including barley and rye.
Gluten causes health problems in sufferers of celiac disease (CD) and some cases of wheat allergy.
For those diagnosed with celiac disease, a strict gluten-free diet constitutes the only effective treatment to date.
There is ongoing research and debate on non-celiac gluten sensitivity.
A dairy free diet contains no milk, butter, sour cream, ice cream, cheese, including cream cheese and cottage cheese, whey, casein, or foods prepared with any of these ingredients.
The most common reason people follow a dairy free diet is due to allergies. Milk allergy is an immune system response to milk protein.
The second most common reason people follow a dairy free diet is due to lactose intolerance.
People who are lactose intolerant are sensitive to milk sugar which is known as lactose.
Because of this, people with this condition must also avoid dairy products, although trace elements of milk may be tolerated by most individuals.