Health experts recently highlighted that malnutrition can cause its own distinct form of diabetes, urging for global recognition of Type 5 diabetes. This classification is crucial for addressing the disease effectively in countries already grappling with widespread poverty and starvation. Unlike Type 2 diabetes, often linked to obesity and insulin resistance, or Type 1, an autoimmune condition with insufficient insulin production, Type 5 diabetes primarily affects underweight individuals under 30 due to inadequate nutrition. It presents a unique challenge to healthcare systems.
Understanding Type 5 Diabetes
Malnutrition-related diabetes, now formally known as Type 5 diabetes, impacts over 25 million people worldwide. It predominantly affects individuals in low- and middle-income countries across regions such as South-East Asia and sub-Saharan Africa. This form of diabetes stems from prolonged undernutrition, particularly during crucial developmental stages like early childhood and adolescence. Poor maternal nutrition, frequent infections, and chronic food insecurity are key factors. These can impair pancreatic development, thereby reducing its ability to produce adequate insulin.
Researchers have actively tracked this specific type, noting its significant difference from Type 1, which involves autoimmune damage, and Type 2, which primarily involves insulin resistance. Instead, Type 5 diabetes is characterized by a profound defect in insulin secretion. The pancreas struggles to produce enough insulin due to underdeveloped pancreatic tissue. Interestingly, patients with Type 5 diabetes typically do not develop ketonuria or ketosis. This feature helps differentiate it from Type 1, despite similar insulin deficiency and high blood glucose levels.
Historical Context and Recognition of Type 5 Diabetes
The concept of diabetes driven by malnutrition is not entirely new. In the 1980s and 1990s, the World Health Organization (WHO) indeed classified a form of malnutrition-related diabetes. However, the WHO later abandoned this classification in 1999, citing a lack of expert consensus on whether undernourishment alone was sufficient to cause diabetes.
Despite this, numerous studies from countries including Bangladesh, Ethiopia, India, Indonesia, Nigeria, Uganda, Pakistan, and Rwanda have continued to indicate the possibility of this distinct diabetes type. In a significant development, the International Diabetes Federation (IDF) officially recognized malnutrition-related diabetes as Type 5 diabetes in April 2025 at its World Diabetes Congress in Bangkok, Thailand. This recognition marks a pivotal step toward acknowledging and addressing this long-overlooked condition globally.
Challenges in Diagnosis and Treatment
The exact link between malnutrition and Type 5 diabetes is still under investigation, and guidelines for its diagnosis and management are currently under development. A primary challenge lies in differentiating Type 5 diabetes from Type 1, as misdiagnosis can lead to inappropriate treatment. Administering standard doses of insulin, typical for Type 1, can dangerously lower blood sugar levels in a Type 5 patient. This can potentially be fatal, as Type 5 patients often require very small amounts of insulin or oral medications.
Diagnosis relies heavily on assessing the clinical picture. This includes a history of malnutrition, a low body mass index (typically below 19), and a lack of autoimmune markers characteristic of Type 1 diabetes. Standard blood tests can detect abnormal glucose levels, but a specific diagnostic test for Type 5 is not yet established.
Combating Malnutrition-Related Diabetes
Effective strategies to combat Type 5 diabetes necessitate a focus on its root causes. The authors of the Lancet Global Health paper emphasize the importance of supporting programs already working to alleviate poverty and hunger. This includes providing communities with access to affordable, energy-dense staple foods rich in protein and complex carbohydrates. Examples of such foods include lentils, legumes, oil-enriched cereals, and fortified grains.
Prevention efforts therefore involve improving maternal nutrition, strengthening child nutrition programs, ensuring food security in vulnerable regions, and reducing overall poverty and infection risks. Addressing these systemic issues can help prevent the pancreatic damage that leads to Type 5 diabetes in young adults.
Frequently Asked Questions
Q1: What is Type 5 diabetes?
Type 5 diabetes is a newly recognized form of diabetes specifically linked to chronic malnutrition, particularly in early life. It is characterized by the pancreas’s reduced ability to produce insulin, rather than autoimmune destruction (Type 1) or insulin resistance (Type 2).
Q2: Who is primarily affected by Type 5 diabetes?
This form of diabetes mostly affects young adults under 30 who are underweight, primarily residing in low- and middle-income countries in regions like South-East Asia and sub-Saharan Africa, where malnutrition is prevalent.
Q3: How is Type 5 diabetes different from Type 1 and Type 2 diabetes?
Unlike Type 1 diabetes, it is not an autoimmune condition. Unlike Type 2 diabetes, it is not associated with obesity or insulin resistance. Instead, Type 5 diabetes results from a profound defect in insulin secretion due to impaired pancreatic development caused by prolonged undernutrition. For a comprehensive understanding of diabetes management, consider our International Post Graduate Program In Diabetes Mellitus Management or the Master Specialization In Diabetes Mellitus Management.
References
- Malnutrition causes unrecognised type of diabetes: experts – ETHealthworld
- Type 5 diabetes – International Diabetes Federation
- Type 5 diabetes – Wikipedia
- Malnutrition-Related Diabetes Officially Named ‘Type 5’ – Medscape
- What Is Type 5 Diabetes? A New Form of Diabetes Linked to Childhood Malnutrition
- Type 5 Diabetes Officially Recognized: A type impacting the malnourished – DD News
- Malnutrition-related diabetes receives own classification – Irish Health Pro
- Type 5 Diabetes: A Long-Overdue Recognition of Malnutrition-Related Diabetes
- A Distinct New Form of Diabetes Is Officially Recognized – ScienceAlert
- Diabetes Mellitus – World Health Organization (WHO)
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