Why are Cancer rates low at higher elevations

Recent studies have shown that cancer rates tend to be lower in populations living at higher elevations, sparking curiosity among researchers and health experts. Several environmental and physiological factors are believed to contribute to this trend.

At higher altitudes, the body experiences a drop in oxygen levels, which leads to a condition known as hypoxia. While this may sound harmful, mild hypoxia can trigger beneficial cellular responses, such as improved efficiency in oxygen usage and the activation of protective genes. These responses may play a role in suppressing tumor growth or slowing cancer progression.



Exposure to increased ultraviolet (UV) radiation at higher elevations is also thought to influence cancer rates. While excessive UV exposure is linked to skin cancers, moderate exposure may help in the production of vitamin D, which is known for its protective role against certain types of cancer.

Lifestyle differences could be another factor. People in high-altitude areas may lead more active lives, have lower obesity rates, and consume diets richer in natural foods all of which can contribute to lower cancer risk.

Moreover, pollutants and industrial toxins are often more concentrated in low-lying urban regions. Cleaner air and reduced exposure to environmental carcinogens in mountainous areas may also play a part in the reduced cancer rates observed there.

Although more research is needed to fully understand the correlation, the findings open up new avenues for exploring how environmental conditions influence long-term health and disease prevention.
*This news appeared on Times Of India on 21st May 2025