Blood sugar is under control in people living in high altitude, low oxygen protects against diabetes

How to control diabetes: Because of hypoxia, red blood cells switch their metabolic gears and instead of merely delivering oxygen, they begin soaking up glucose from the bloodstream (image: Pexels)

• High-altitude living reduces type 2 diabetes risk through red blood cells
• Red blood cells absorb more glucose under low oxygen conditions
• A new drug mimics altitude effects, lowering blood sugar in mice

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Did you know that climbing a mountain might do more than strengthen your lungs? It could even re‑set how your body handles sugar, according to a new study. Scientists have concluded that people living at high elevation have lower rates of Type 2 diabetes than those at sea level. Despite years of speculation, the exact biological reason was unclear, until now.

Living at high altitude means coping with low levels of oxygen, a condition known as hypoxia. Researchers from the Gladstone Institutes and collaborators found that under such conditions, red blood cells switch their metabolic gears; instead of merely delivering oxygen, they begin soaking up glucose from the bloodstream, acting like tiny sugar sponges. This remarkable shift lowers circulating blood sugar, helping protect against diabetes.

What research reveals

Red blood cells step into a new role: Traditionally seen as oxygen carriers, red blood cells under low‑oxygen stress ramp up glucose uptake. Scientists discovered that this wasn’t a minor effect but a major change in how the body uses sugar. By hoovering up glucose, these cells help keep blood levels lower, a potential clue to why mountain dwellers tend to have less diabetes.

Also read | Diabetes control: 5 early symptoms of diabetes in men and women

Hypoxia remodels metabolism: Low oxygen doesn’t just make you breathe harder;  it rewires energy use. Research into glucose and oxygen interactions shows that hypoxia can boost glucose utilisation across tissues, influencing everything from muscle to red cell activity. These metabolic adjustments may help the body cope with both energy and oxygen shortages.

Implications for treatments: The scientists created a drug that mirrors high‑altitude conditions. Called HypoxyStat, it tricks red cells into behaving as if oxygen is scarce, even at sea level. In mouse studies, this pill reversed high blood sugar more effectively than current therapies, suggesting a completely new approach to treating diabetes by engaging red‑cell glucose uptake.

Also read | Diabetes: You can reduce risk of Type 2 diabetes, and no, you don’t have to lose weight for it

More than a mountain myth: These discoveries stretch beyond high peaks and remote villages. They remind us that human physiology is deeply influenced by the environments we inhabit, and that oxygen, the very air we breathe, plays a bigger role in metabolism than previously understood.

Disclaimer: This article, including health and fitness advice, only provides generic information. Don’t treat it as a substitute for qualified medical opinion. Always consult a specialist for specific health diagnosis