Certain illnesses can restrict the foods one can eat. For example, when a person has celiac disease, they are unable to consume gluten. Therefore, their carbohydrate intake might be lower than normal, since they are unable to consume the standard form of carbohydrates (Celiac Disease Foundation, 2015). Another example could be pancreatitis, a disease of the pancreas. When a person suffers from this, they must eat foods low in protein, which will affect their recommended daily intake (Weil, 2015). A common example could be cardiovascular disease, where fatty and high cholesterol foods should be avoided. Dairy products and other foods high in saturated fat should also be avoided (Greenfacts.org, 2015). This can make it difficult for the client to find foods that meet their needs and do not contain the factors listed.