Understanding

Diabulimia (ED-DMT1)

Diabulimia is an eating disorder in which a person with type 1 diabetes deliberately takes less insulin than they need — or none at all — in order to lose weight. Because insulin is essential to survival, this makes diabulimia one of the most medically dangerous of all eating disorders. It is also treatable, with the right combined care.

Also known as: ED-DMT1 (eating disorder–diabetes mellitus type 1), T1ED

Insulin restriction is common among girls and women with type 1 diabetes and becomes more frequent with age; it is under-recognized and often hidden

Written by the Eating Disorder Facts editorial team Awaiting clinical review by Cindy Hawthorn, MD Updated July 20, 2026

What is diabulimia?

"Diabulimia" is the informal name for an eating disorder in which someone with type 1 diabetes restricts or omits their insulin to control their weight. Clinically it is often called ED-DMT1 (eating disorder–diabetes mellitus type 1). Insulin restriction functions as a form of purging, which is why diabulimia is frequently accompanied by other eating disorder behaviors.

How insulin restriction harms the body

Insulin allows the body to move glucose from the blood into cells for energy. Without enough of it, blood sugar rises and the body cannot use the calories it takes in; instead, glucose spills into the urine, and the body begins breaking itself down. The weight loss this produces comes at an enormous cost: dangerously high blood sugar, dehydration, and the risk of a life-threatening emergency called diabetic ketoacidosis. In short, the mechanism that drives the weight loss is the same one that causes severe, sometimes fatal, harm.

Is diabulimia an official diagnosis?

Diabulimia is not a standalone diagnosis in the DSM-5. However, the DSM-5-TR explicitly recognizes the restriction or omission of insulin as a purging behavior, and diabulimia is typically diagnosed as bulimia nervosa or another specified eating disorder (OSFED) in the context of type 1 diabetes. The lack of a separate label does not make it any less real or less dangerous.

Why type 1 diabetes raises eating disorder risk

Living with type 1 diabetes means constant attention to food, carbohydrates, numbers, and control — a relentless focus that overlaps uncomfortably with the mindset of an eating disorder. Starting insulin often causes some weight gain, and a person may discover that skipping it reverses that. These pressures, layered on top of the same genetic and cultural factors behind other eating disorders, make people with type 1 diabetes significantly more vulnerable.

Recognize

Signs & Symptoms

Taking less insulin than prescribed, or skipping doses

Fear or avoidance of insulin, or anxiety that insulin causes weight gain

Unexplained high blood sugars, or a persistently high A1c that does not match reported management

Recurrent episodes of diabetic ketoacidosis (DKA) without another explanation

Secrecy about blood glucose numbers, or reluctance to manage diabetes around others

Avoiding diabetes-related medical appointments

Extreme thirst and frequent urination

Unexplained weight loss

Fatigue and frequent infections

Preoccupation with weight, food, and "safe" foods

Understand

Causes & Risk Factors

No single cause has been identified. Eating disorders arise from a complex interplay of genetic, biological, behavioral, psychological, and social factors.

The unique psychological burden of type 1 diabetes — constant monitoring of food, carbohydrates, and numbers

Weight gain that can accompany starting or optimizing insulin

The discovery that restricting insulin causes weight loss

Body image pressures and dissatisfaction

Perfectionism, anxiety, and depression, which are common alongside chronic illness

The same genetic, biological, and sociocultural factors that contribute to other eating disorders

Health Impact

Health Consequences

Eating disorders have serious medical consequences and can be life-threatening if untreated.

Diabetic ketoacidosis (DKA) — a life-threatening emergency requiring immediate medical care
Accelerated, early-onset diabetes complications, including eye damage (retinopathy) that can lead to blindness
Kidney disease (nephropathy) and eventual kidney failure
Nerve damage (neuropathy)
Cardiovascular disease
Gastroparesis (slowed stomach emptying)
Frequent infections and slow healing
Severe dehydration and electrolyte disturbances
A significantly shortened life expectancy and high mortality

Healing

Treatment Approaches

01 A multidisciplinary team that treats the eating disorder and the diabetes together — combining endocrinology or diabetes care with eating disorder specialists, a dietitian, and a therapist

02 Medical stabilization first, since the physical dangers can be acute

03 Gradual, medically supervised restoration of insulin — correcting blood sugar too quickly can itself be harmful, so this must be done carefully

04 Cognitive behavioral therapy and other eating disorder treatment

05 Support for body image and for the genuine, ongoing burden of managing diabetes

06 Family involvement, and diabetes education delivered with compassion rather than blame

07 Long-term coordination between diabetes and mental health care

There is hope

Recovery is possible with the right help.

Talk to a professional who specializes in eating disorder treatment.

Find Help Near You

FAQ

Frequently Asked Questions

Sources