National Celiac Disease Awareness Day is on September 13, according to nationaldaycalendar.com.

Celiac Disease is from "the immune response that damages the villi in the small intestine," said the website.

This can eventually led to the damage not allowing the body to absorb nutrients, said the website.

There is no cure, and a "controlled diet" is the only treatment, said the website.

Those who suffer from it cannot consume grains like wheat, barely, rye, ETC., said the website.

Around three million people suffer from the disease, said the website.

National Celiac Disease Awareness Day provides resources and support to those who suffer from the disease, said the website.

How should one observe the holiday?

• Serve a gluten free meal to a loved one who has the disease
• Find new gluten free recipes and be mindful of their diet
• Learn about the disease
• If you have been diagnosed with it, share your story
• Use the hashtag #CeliacDiseaseAwarenessDay on social media to show how you celebrated the day

In 2005, the United States Senate passed a resolution proclaiming September 13 as National Celiac Disease Awareness Day, said the website.

This day is on the birthday of Dr. Samuel Gee who wrote the first publication on the disease and the kind of diet needed to treat it, said the website.