Your DNA Doesn’t Predict Your Future
Even if an at-home DNA test indicates that you are at risk for specific cancer or disease such as Alzheimer's, it is critical to remember that this is not a prediction of your future health. There are thousands of genes associated with conditions such as breast cancer, and most genetic tests only look at a few of the most common.
Furthermore, many diseases linked to genetics are determined by factors other than your genes. Alzheimer's, for example, is thought to be as much a result of environmental factors and how active you keep your brain as it is of genetics. So, if an at-home DNA test indicates that you may be at risk for a specific condition, consider your genes to be one of many risk factors rather than predictors of the future.