Comparative Study of the Effect of UV vs. Gamma Radiation on Human Hair

January 2010 in “ Biophysical journal ”

Ervin Palma, David González‐Gómez, Eugene Galicia, Yuri V. Griko

UV radiation gamma radiation tryptophan fluorescence SH-groups Trp fluorophore ultraviolet radiation gamma rays

TLDR Hair fluorescence intensity can measure radiation exposure effectively.

The study compared the effects of UV and 60Co gamma radiation on human hair to assess its potential as a biomarker for radiation exposure. Using tryptophan fluorescence and chemical analysis, it was found that both types of radiation caused progressive damage to hair fibers, with UV radiation causing more rapid and intense changes than gamma radiation. The damage was evidenced by decreased fluorescence intensity and reduced free SH-groups. The study concluded that fluorescence intensity is a sensitive measure for evaluating radiation exposure, with UV radiation being particularly damaging to the stable Trp fluorophore.

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