These days, faster diagnostic and machine learning on large sets of data promise a real-time understanding of health. Predictive analytics help to decrease costs, and helps in preventive disease management. Precision medicine is an approach to treatment and prevention considering individual variability in genes, environment and lifestyle for each person and also classify people precisely, based on susceptibility, microbiology and/or prognosis, at a considerably higher resolution. Health data analysis provides useful perspectives to predict the future. Precision medicine makes true predictive analytics possible. Prediction requires precision, but it does not require precision alone. Predictability comes from a wide and narrow gap which requires a data sets with high-accuracy. For more read : http://hitconsultant.net/2016/02/22/31535/