University of Cologne study identifies molecular link between moderate cold and longevity

Researchers at the University of Cologne have identified a molecular mechanism that may explain how moderate cold temperatures contribute to longevity and cellular health. According to a study published in the journal Nature, exposure to moderate cold stimulates the production of a metabolite known as dihydrobiopterin (BH2) in muscle tissue.

This compound travels to other tissues and converts into an active molecule called tetrahydrobiopterin (BH4), which helps maintain protein balance within cells and prevents the accumulation of harmful, abnormal proteins. In experiments conducted on C. elegans nematodes, exposure to 15 degrees Celsius activated this pathway and extended lifespan.

Further tests on human cells associated with Huntington’s disease and amyotrophic lateral sclerosis (ALS) showed that the BH2 compound helped reduce the accumulation of abnormal proteins. While these findings offer promising directions for treating age-related neurodegenerative diseases, researchers emphasize that further study is required to determine if these effects translate to human longevity or clinical therapeutic protection.