Cancer runs in both sides of my family, less on my mothers side could be just random there but on my fathers side, there are no deaths on anyone for about 30 years that are caused by anything else than cancer. Breast cancer in women and prostate cancer in men, on my grandfathers side he lost his father, mother and sister to breast and prostate cancer, my great great grandmother died from it too. on my grandmothers side her father died from it and her cousin but i don't know who he was, my father and his father (also me) have needle phobias so neither of them have been tested but there is a doctor who is looking in the family for some medical relations for this and if it is a genetic mutation. Most of them died of age around 40-60 but my great-grandmother reached 80, she also had it in her kidneys. Are there very high chances of me having the mutation that runs and should I be tested for it? (also is there a way to give blood sample without it involving needles :s)?