When doctors talk about preventing type 2 diabetes, the conversation often centers on adults who are overweight or already have rising blood sugar.
A new international expert report says that view is too narrow. The roots of diabetes risk may begin much earlier, even before a child is conceived.
The report was led by scientists at University Hospital Tübingen and the German Center for Diabetes Research in Germany. Published in Nature Medicine, it presents a new 10-point framework designed to rethink how societies prevent type 2 diabetes and its complications.
The basic message is that diabetes prevention should follow people across their entire lives.
Instead of starting only when someone reaches middle age or develops prediabetes, doctors and public health programs could look for opportunities to protect metabolic health before pregnancy, during pregnancy, in childhood and throughout adulthood.
Type 2 diabetes is one of the world’s most common chronic diseases. It develops when the body can no longer use insulin effectively enough to keep blood sugar under control. The process often happens slowly and can remain unnoticed for years.
Insulin is produced by the pancreas and acts like a signal that helps cells take glucose, or sugar, from the bloodstream. When cells become resistant to that signal, the pancreas has to work harder. Eventually, blood sugar may rise into the prediabetes range and later reach the level used to diagnose diabetes.
This long development period is exactly why the researchers believe prevention needs to change. The risk of diabetes is influenced by far more than what someone eats during the months immediately before diagnosis.
Biology, family circumstances, physical activity, body weight, sleep, social conditions and the environment can all shape risk over many years.
The health of parents may even matter before pregnancy begins. Research increasingly suggests that the metabolic health of both mothers and fathers can influence the health of the next generation. During pregnancy, the mother’s nutrition, weight and blood sugar can provide another important influence on the developing child.
The opportunities continue after birth. Early nutrition, breastfeeding, growth patterns and family eating habits can affect health during childhood. As children become teenagers and young adults, changes in activity, diet, sleep and body weight can further shape their future diabetes risk.
This does not mean that parents are responsible if a child eventually develops diabetes. Type 2 diabetes is a complex disease affected by genetics, biology, social conditions and many factors that individuals cannot fully control.
The framework instead argues that health systems should recognize these different stages as opportunities to support healthier development.
One of the most interesting recommendations concerns prediabetes. Prediabetes is often described as an intermediate stage between normal blood sugar and type 2 diabetes. But the experts say it should not be viewed as a one-way path toward disease.
Some people with prediabetes can bring their blood sugar back into the normal range. Studies suggest that lifestyle programs involving healthier eating, physical activity and weight management can help some people achieve this. Returning to normal blood sugar is associated with a lower chance of later developing diabetes.
The authors want this return to normal blood sugar, known as prediabetes remission, to become a central goal. Rather than being satisfied with slowing the rise in blood sugar, prevention programs could actively try to restore healthier blood sugar regulation and then help people maintain it.
The framework also emphasizes that prevention should be tailored to the individual. Diabetes does not develop in exactly the same way in everyone. Some people may have a stronger inherited risk, while others may be affected more by excess liver fat, limited physical activity, poor access to healthy food or other conditions.
New technology could help with this more personalized approach. Digital health tools and artificial intelligence may eventually help identify people at increased risk earlier and suggest prevention strategies suited to their circumstances. However, these tools will need careful testing to make sure they are accurate, useful and accessible.
The researchers also highlight health inequality as a major issue. Telling people to eat better and exercise more has limited value if healthy food is unaffordable, neighborhoods are unsafe for physical activity or medical care is difficult to access.
Effective diabetes prevention therefore requires changes not only in individual behavior but also in healthcare and society.
The Nature Medicine article provides a broad roadmap rather than proof that one particular prevention program will work for everyone.
Its recommendations come from an international expert review of existing evidence, and many parts of the framework will require additional studies and real-world testing. The benefits and costs of starting interventions at different life stages also need to be understood more clearly.
Even so, the framework makes an important point about timing. If the biological changes leading to diabetes begin years or decades before diagnosis, prevention should not wait for the final stages of that process.
Protecting metabolic health throughout life, and trying to reverse prediabetes when it appears, may offer a stronger way to reduce the enormous burden of type 2 diabetes.
Source: University Hospital Tübingen and German Center for Diabetes Research (DZD).
