In a number of large-scale studies, regular ice cream consumption was unexpectedly found to be associated with a lower risk of developing type 2 diabetes; however, scientists caution that this is a statistical association rather than a proven protective effect of the product, according to SciTechDaily, citing research on dairy products and metabolic health.
Ice cream is not typically considered a disease-preventive food due to its sugar, saturated fat, and calorie content. Nevertheless, in several large observational studies of dairy products, researchers discovered an unexpected finding: in certain groups, people who ate ice cream more frequently were less likely to develop type 2 diabetes.
One of the earliest indications emerged from the Health Professionals Follow-up Study, which included more than 41,000 men. The published study focused primarily on the association between low-fat dairy products and the risk of diabetes; however, in the data on individual products, ice cream also showed an unexpected inverse association with the disease.
Later, in a 2014 study published in BMC Medicine, researchers analyzed three large U.S. cohorts: 41,436 men from the Health Professionals Follow-up Study, 67,138 women from the Nurses’ Health Study, and 85,884 women from the Nurses’ Health Study II. Over nearly 4 million person-years of follow-up, 15,156 cases of type 2 diabetes were recorded.
The main conclusion of this study was more conservative: total dairy intake was not significantly associated with the risk of diabetes, whereas yogurt showed a consistent inverse association. In a meta-analysis of 14 prospective cohorts with 459,790 participants and 35,863 cases of diabetes, a daily serving of yogurt was associated with an approximately 18% reduction in the risk of diabetes.
Furthermore, in a subgroup analysis of individual dairy products, ice cream also demonstrated a statistically significant inverse association with the risk of diabetes.
The researchers emphasize that these findings should not be interpreted as a recommendation to eat ice cream to prevent diabetes. The most likely explanation is reverse causality: people with early signs of metabolic problems, excess weight, or high cholesterol may, on the advice of doctors, cut back on sweets, including ice cream. As a result, there may be more relatively healthy people among those who continue to eat ice cream.
Another possible explanation is errors in dietary questionnaires. Observational studies are often based on self-reports, and people may inaccurately report their consumption of foods considered “unhealthy.” This can distort the statistical association between diet and disease.
Some researchers also suggest that part of the effect may be related to the characteristics of milk fats and proteins, ice cream’s lower glycemic index compared to some other carbohydrate-rich foods, and the structure of milk fat. However, these hypotheses do not yet provide grounds for considering ice cream a protective food.
For the food industry and the dairy market, such studies are important not as an endorsement of ice cream, but as a reminder of the complexity of evaluating food products. The same product can have different effects depending on its composition, portion size, frequency of consumption, overall diet, body weight, level of physical activity, and an individual’s health status.
Nutrition experts continue to recommend limiting foods high in added sugars and saturated fats. Ice cream can remain part of a healthy diet as a dessert in moderate amounts, but the available data do not prove that consuming it reduces the risk of diabetes or cardiovascular disease.
Thus, the scientific debate surrounding ice cream remains unresolved.
