Physical examination, including height, weight, blood pressure, electrocardiogram and chest X-ray, is usually required to assess the applicant's physical health. The radiation dose of these examinations is not large, which is within the safe range, so it will not harm the body to carry out an examination once a year.
However, it should be noted that although the health certificate will not cause harm to the body once a year, if the results are abnormal during the examination, further treatment or examination may be needed, which may have a certain impact on the body. Therefore, it is suggested that the necessary examination and treatment should be carried out according to the doctor's advice when handling the health certificate.