Final answer:
Breast cancer risk is influenced by inherited genetic factors such as BRCA1 and BRCA2 genes and environmental factors, including alcohol consumption. Less than 10 percent of human cancers are due to genes with substantial impact on cancer risk. Research and criteria like early onset and family history are vital in assessing individual risk.
Step-by-step explanation:
Risk Factors for Breast Cancer
Breast cancer constitutes a significant health concern, with certain inherited risk factors like the BRCA1 and BRCA2 genes notably increasing a woman's chances of developing the disease. These genes are associated with up to a 75 percent risk for breast and ovarian cancer. Nevertheless, not all women with these genes will develop cancer, signifying the role of environmental factors alongside genetic predisposition. A mere fraction, fewer than 10 percent, of human cancers are caused by genes with a considerable effect on cancer risk.
Other factors can increase cancer risk, such as the consumption of certain food substances. For instance, alcohol is known to heighten the risk of various cancers including breast cancer. Recommendations for alcohol consumption advise no more than 2 drinks per day for men and 1 drink per day for women to minimize risk.
Data and research are critical in understanding cancer risk. Studies comparing incidence rates, such as those that determined an increase in female breast cancer cases from 2012 to 2013, help assess cancer trends and effectiveness of preventive measures. Moreover, criteria based on early onset of cancer or familial occurrences offer insights into individual risk assessment and potential genetic influences.