El estudio, publicado en "Cancer Research", ha encontrado que los varones que más se han expuesto al sol a lo largo de su vida presentan la mitad de riesgo de desarrollar este tipo de tumor respecto a individuos apenas expuestos a la luz solar.
En el caso de que los sujetos sean portadores de determinadas variantes genéticas, el riesgo se reduce aun más, llegando al 65%, señalan los autores.
Compararon a 450 varones blancos no hispanos del área de San Francisco que presentaban cáncer de próstata avanzado con un grupo control de 455 varones sin cáncer. Midieron la exposición al sol de todos los participantes comparando la pigmentación de la piel de la axila, habitualmente no expuesta al sol, con la pigmentación de la frente, empleando un reflectómetro.
De este modo comprobaron que entre los pacientes con cáncer de próstata se había producido una exposición menor a la luz solar –la pigmentación de la piel de la axila y de la frente eran más similares- que en los controles.
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