Risk engines and related methods may benefit patients and their physicians. For example, patients may benefit from being able to determine their personal genetic, environmental, and behavioral risks. Moreover, physicians may be able to provide statistically-driven individual recommendations based on a risk engine's determination of such risks. A method can include selecting one or more candidate genetic variants associated with a phenotype from the scientific literature. The method can also include scoring a genetic association between the one or more candidate genetic variants and the phenotype. The method can further include selecting one or more high-scoring genetic variants. Selecting a best genetic variant within each of at least one linkage disequilibrium (LD) block can also be included in the method. The method can additionally include calculating risk associated with the best genetic variant from the at least one LD block.