Scientists have long observed that people living in high mountain regions often have better blood sugar control than those living at lower altitudes. These areas have less oxygen, yet people there seem to have lower rates of diabetes. Until recently, no one fully understood why this happens.
A new study from the Gladstone Institutes, published in Cell Metabolism, has uncovered a surprising explanation. The research shows that red blood cells, which are usually known for carrying oxygen, can also help remove sugar from the blood when oxygen levels are low.
The human body needs oxygen to produce energy. When oxygen is limited, such as at high altitude, the body must adjust. This condition is called hypoxia. In response, the body increases the number of red blood cells to carry more oxygen. But this study shows that the changes go even further.
The researchers studied mice in low-oxygen environments and found that their blood sugar levels dropped quickly after eating. This indicated that glucose was being used very efficiently. When scientists tracked where the glucose was going, they were surprised to find that major organs were not responsible.
Instead, red blood cells were absorbing large amounts of glucose. These cells acted as a hidden “glucose sink,” meaning they pulled sugar out of the bloodstream and used it. This was unexpected because red blood cells were previously thought to have a limited role in metabolism.
The study also showed that these cells use glucose to produce substances that help release oxygen more effectively to tissues. This is important in low-oxygen conditions because the body needs to make the most of the oxygen it has. At the same time, this process lowers blood sugar levels, which may explain the reduced risk of diabetes at high altitude.
To explore this further, researchers tested a drug called HypoxyStat. This drug creates effects similar to low oxygen by changing how red blood cells handle oxygen. In mice with diabetes, the drug significantly reduced blood sugar levels, even more effectively than some current treatments.
These findings suggest a new direction for diabetes treatment. Instead of focusing only on insulin or diet, scientists may be able to use red blood cells to help control glucose levels. This represents a shift in how researchers think about metabolism.
However, the study has limitations. It was conducted in animals, and the results may not fully apply to humans. More research is needed to understand whether the same mechanism works in people and whether treatments like HypoxyStat are safe and effective.
In addition, while low oxygen may have some benefits, it is not practical or safe for most people to live in such conditions. Therefore, developing medications that mimic these effects is likely the best path forward.
Overall, this research highlights a hidden role of red blood cells in managing blood sugar and offers a promising new idea for treating diabetes. It also shows how the body adapts in complex ways to environmental changes.
In summary, while the findings are exciting, they should be viewed with caution until more studies are completed. If confirmed in humans, this discovery could lead to new and innovative approaches to managing diabetes.
If you care about diabetes, please read studies about Vitamin D and type 2 diabetes, and to people with diabetes, some fruits are better than others.
For more health information, please see recent studies that low calorie diets may help reverse diabetes, and 5 vitamins that may prevent complication in diabetes.
