LADA diabetes (Latent Autoimmune Diabetes in Adults) is a slow-developing form of type 1 diabetes that only occurs in adulthood (usually from the age of 30). It is often initially misdiagnosed as type 2 diabetes because those affected initially produce their own insulin.
Causes and pathophysiology
LADA is caused by an autoimmune reaction against the insulin-producing beta cells of the pancreas. The destruction process is significantly slower than in classic type 1 diabetes. Typical markers are autoantibodies, especially GAD antibodies.
Differential diagnosis of diabetes types
| feature | LADA | Type 1 diabetes | Type 2 diabetes |
|---|---|---|---|
| Age of diagnosis | mostly > 30 years | mostly childhood/adolescence | mostly > 40 years |
| Course of the disease | slowly (years) | quickly | very slowly |
| Autoantibodies | positive (e.g. GAD) | positive | negative |
| Insulin production | received first | missing early | initially compensatory high |
| Start of insulin therapy | delayed (often after years) | immediately | late (if failure) |
Symptoms
The symptoms develop gradually and initially resemble those of type 2 diabetes:
- Severe thirst and frequent urination
- Fatigue and loss of performance
- Weight loss despite a normal diet
- Vision problems
- Frequent infections
Diagnostics and monitoring
The detection of autoantibodies (especially GAD) is crucial when diabetes is present. Low C-peptide indicates the progressive loss of insulin production.
Therapy strategy
Oral antidiabetic medications may help initially. Almost all those affected require insulin over time. Early insulin therapy can preserve the remaining beta cells for longer (“honeymoon phase”).
Further information:
→ Diabetes mellitus – knowledge and overview
→ Why hyporest
→ Type 1 diabetes
Sources
- German Diabetes Society (DDG). S3 guideline “Diabetes mellitus type 1 and type 2”. As of 2025. Available at: www.deutsche-diabetes-gesellschaft.de/leitlinien.
- American Diabetes Association. Standards of Medical Care in Diabetes—2026. Diabetes Care. 2026;49(Suppl 1). Available at: diabetesjournals.org.
- Robert Koch Institute (RKI). Federal health reporting – diabetes mellitus in Germany. Berlin 2024.
- International Diabetes Federation (IDF). IDF Diabetes Atlas. 11th edition. Brussels 2025. Available at: diabetesatlas.org.
Important note:
The information in this encyclopedia article is intended solely for general and non-binding information. They do not replace medical advice, diagnosis or therapy. If you have any health questions or complaints, please always consult a doctor or qualified healthcare professional. The content was created with the greatest possible care, but errors cannot be completely ruled out.
Last updated: February 26, 2026
