Exposing yourself to ultraviolet rays first thing in the morning is better to avoid developing skin cancer , whether we opt for a morning sunbath or go to a tanning booth, according to a recent study by the University of North Carolina (USA). This is because there is a protein called XPA , responsible for repairing DNA damage caused by ultraviolet radiation, which reaches its maximum activity during the morning shift.
Interestingly, scientists have shown that the opposite happens to rodents : if they are exposed to ultraviolet radiation in the morning, the risk of contracting cancer is 500% greater than if they receive the same doses of UV rays in the afternoon. And it is because the cycle of activity of repair proteins is the opposite of that of humans.
