Does frequent multiple ct scan cause risk of cancer or cell damage or tumor in the near future if my age is just 26. I have undergone 1) 3 head ct in 2018 out of which 2 were taken within 2 weeks period only just to clear my doubts I did ct scan doctors did?t advise me just due to my fear and anxiety ocd I did it at that time I don?t know about it?s risk factors. 2) done chest ct scan in 2020 3) 2 chest x-rays in 2018 one and 2019 1.4)throat ct scan or x-ray I don?t remember that also in 2018 5) breast scan ct or x-ray or usg don?t remember that also in 2017 am I prone to cancer also I have pcos pcos also risks to ovarian cancer so this pcos alon with radiation exposure cause any cancer or tumour in the future? I am exposed to almost 2+2+2+7=13 msv due to head and chest ct scan x-rays might me 2 msv so it would be nearly 16 msv .plz reply.