LADA: Why Type 1 Diabetes in Adults Often Goes Undiagnosed

LADA stands for latent autoimmune diabetes in adults. It is Type 1 diabetes—an autoimmune condition—but it develops in adulthood rather than childhood. The term exists because LADA presents differently than childhood-onset Type 1 diabetes, but the underlying disease is the same.

Type 1 diabetes typically comes on suddenly in children. Blood sugar rises dramatically, symptoms become severe quickly, and diagnosis happens in a crisis—sometimes with diabetic ketoacidosis (DKA). Pediatricians are trained to recognize this pattern.

LADA develops more slowly. Blood sugar creeps up gradually over time, symptoms may be mild, and people don't necessarily feel acutely ill. When someone in their 30s, 40s, or 50s visits an adult physician with elevated blood sugar and mild symptoms, the doctor may assume Type 2 diabetes—especially if the person is overweight or has other metabolic risk factors.

This mismatch between what doctors expect and how LADA actually presents is why it remains one of the most commonly missed diagnoses in diabetes.

People with undiagnosed LADA often report years of frustration. They receive Type 2 diabetes treatment and advice—diet, exercise, sometimes oral medications—that don't address their actual autoimmune condition. Eventually, as their insulin-producing cells continue to decline, the truth emerges, but only after a delay that could have been avoided with proper testing.

If you were diagnosed with Type 2 diabetes as an adult but feel the diagnosis doesn't fit your experience—or if your family has Type 1 diabetes—ask your doctor about autoimmune diabetes testing. Simple blood tests can check for diabetes-related autoantibodies, which would indicate LADA rather than Type 2.

Knowing whether you have Type 1 diabetes (including LADA) or Type 2 diabetes matters for how you manage your condition and what to expect going forward.

Source: YouTube community video. Evidence type: Community video — lay discussion, not peer-reviewed research. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.