How Do Genetic Factors Influence Disease Susceptibility?
Genetic factors can either increase or decrease the risk of developing certain diseases. For example, mutations in the BRCA1 and BRCA2 genes significantly raise the risk of breast and ovarian cancers. Similarly, variations in the APOE gene are associated with an increased risk of Alzheimer's disease. These genetic predispositions can help identify individuals who might benefit from early screening and preventive measures.