Medical Study: The Effect of Vitamin D on Diabetes is Linked to Genetic Factors

A recent medical study showed that the effectiveness of vitamin D supplements in preventing type 2 diabetes depends heavily on the patient's genetic makeup. These findings, published in the journal JAMA Network Open, represent an important step toward applying the principles of "personalized medicine" in the prevention of chronic diseases.

The study revealed that individuals with "prediabetes" who possess specific genetic variants achieved a significant reduction in the risk of developing the disease by up to 19% when taking daily doses of vitamin D. The study relied on analyzing data from more than 2,000 participants in previous clinical trials, where the results showed that the benefit from the vitamin varies depending on the type of genetic variant (AA, AC, or CC) in each individual.

Researchers attribute this link to the presence of vitamin D receptors in the insulin-producing cells of the pancreas, suggesting a direct role for the vitamin in regulating blood sugar levels. However, experts warned against taking high doses of vitamin D without medical consultation to avoid potential side effects, especially in the elderly. Researchers hope to develop a simple and accessible genetic test to help identify patients who will benefit most from vitamin D supplements for diabetes prevention.