This paper will review genetic disease in humans with emphasis on recent trends and the future of research related to genes and the human condition. Specifically the research will focus on recent studies exploring links between genetic disease and humans. Ample evidence suggests much attention has been given the relation of genetics and gene research to affective disorders including depression and addiction as well as diseases with known genetic relationships including breast cancer. Parson & Tanzi (2000) note that it is vital that researchers understand how genes may influence not only the course of a disease but one's risk factors for disease and possible outcomes of treatment. .

             Milunsky (2001) notes that when it comes to health it is important researchers focus on discovering the genes that result in specific genetic illnesses so more precise diagnostic models may emerge and provide tools for proper treatment and prevention. New research in gene therapy consistently works to help create additional opportunities for creating more effective detection and diagnosis as well as treatment of diseases, many of which have a prenatal link. Gene research of the future will likely focus more on the ethical nature of genetic research combined with emphasis on defining more predictive tests relating genes to disease manifestation in humans (Milunsky, 2001). .

             Literature Review.

             The literature review will begin with an overview of four studies conducted in the field of genetics related to disease in humans. It will include a synopsis of each of the studies experimental designs and results. The intent of the literature review is to identify areas of interest within the field of genetics related to human disease states, as well as provide a comprehensive overview of recent research conducted that links genetic mutations with human diseases. The researcher is also intent on exploring how relevant genetic testing may be to predicting one's risk for developing certain diseases or conditions.