Diabetes mellitus type 1 (also known as type 1 diabetes) is a form of diabetes mellitus in which not enough insulin is produced.

The lack of insulin results in high blood sugar levels.

The classical symptoms are frequent urination, increased thirst, increased hunger, and weight loss.

Additional symptoms may include blurry vision, feeling tired, and poor healing.

Symptoms typically develop over a short period of time.

JDRF is a major charitable 501(c)(3) organization dedicated to funding type 1 diabetes research (T1D).

JDRF’s stated vision is "a world without type 1 diabetes." The organization has its executive office in New York City, with chapters and branches throughout the U.S., and international affiliates in Australia, Canada, Denmark, Israel, the Netherlands and the United Kingdom.

A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism.

The study of disease is called pathology which includes the study of cause.

Disease is often construed as a medical condition associated with specific symptoms and signs.

It may be caused by external factors such as pathogens, or it may be caused by internal dysfunctions particularly of the immune system such as an immunodeficiency, or a hypersensitivity including allergies and autoimmunity.

A cure is the end of a medical condition; the substance or procedure that ends the medical condition, such as a medication, a surgical operation, a change in lifestyle, or even a philosophical mindset that helps end a person's sufferings; or the state of being healed, or cured.

Health is the level of functional and metabolic efficiency of a living organism.

In humans it is the ability of individuals or communities to adapt and self-manage when facing physical, mental or social changes.

The World Health Organization (WHO) defined health in its broader sense in its 1948 constitution as "a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity." This definition has been subject to controversy, in particular as lacking operational value, the ambiguity in developing cohesive health strategies, and because of the problem created by use of the word "complete".

Other definitions have been proposed, among which a recent definition that correlates health and personal satisfaction.