Chest X-rays for newborn babies are generally not very harmful. Although chest X-rays are X-ray examinations and are radioactive. However, the dose of radiation from a chest x-ray is very small and will not cause serious harm to your child’s body just because of a single exam. Radiation damage can only occur if the child is exposed to a relatively large dose of radiation for a short period of time, or if the child is exposed to radiation for a long period of time. For example, it can cause skin damage, organ damage, and malignant lesions of the blood system. But the dose of radiation to which a child is exposed during a single chest X-ray examination generally does not cause the child to develop any of these problems. Of course, it is, after all, radioactive, and it is important to minimize this type of examination when it is not necessary.