You are saying that you are 16 years old and have intentionally exposed yourself to X-Rays for the fun of it? Someone needs to have a word with your parents or guardian.
"Giedd and his colleagues found that in an area of the brain called the prefrontal cortex, the brain appeared to be growing again just before puberty. The prefrontal cortex sits just behind the forehead. It is particularly interesting to scientists because it acts as the CEO of the brain, controlling planning, working memory, organization, and modulating mood. As the prefrontal cortex matures, teenagers can reason better, develop more control over impulses and make judgments better. In fact, this part of the brain has been dubbed "the area of sober second thought."
"For even though the brain of a teenager between 13 and 18 is maturing, they are losing 1 percent of their gray matter every year"
From The Teen Brain Is A Work In Progress | Inside The Teenage Brain - PBS: https://www.pbs.org/wgbh/pages/frontline/shows/teenbrain/work/adolescent.html