This idea is false. In fact, only 5-10% of all cancers are caused by inheriting defective genes from a parent or grandparent which can double or triple your chances of being diagnosed with cancer. In the African environment where there is stigmatization of the disease, people often discount a cancer diagnosis; hiding it from relatives to avoid ridicule or attributing it to conditions caused by evil spirits. It is also important to know that abnormal genes can skip generations and so the fact that none of your immediate family members have cancer does not rule out the possibility of cancer running in your family. The opposite is also true; having the genes passed on to you doesn’t guarantee your developing cancer. Several environmental factors like smoking, lack of exercise and unhealthy eating habits affect whether or not the abnormal gene will translate into cancer.
What if there really isn’t any history of cancer in my family? Up to 80% of people diagnosed with cancer have no family history of the disease at all. This notwithstanding, researchers warn against disregarding your chances of developing this dreadful disease. Risk factors like age, race and lifestyle factors should influence your decision to screen and the frequency of such screening to allow for early detection of cancer. It is highly recommended that you choose healthy lifestyle options to further decrease your chances of developing cancer. Finally, do not be so busy as to disregard any changes in your overall health. Regular self-checks and visits to the doctor are ways you can make your health a priority.