16 Aug 2017 --- Eating a midnight snack might make sunbathing the next day more dangerous, according to new research. A study in mice from the O'Donnell Brain Institute and University of California (UC) Irvine in the US shows that eating at abnormal times disrupts the biological clock of the skin, including the effectiveness during the daytime of an enzyme that protects against the sun's harmful ultraviolet (UV) radiation.