We are drowning in health care data, but remain thirsty for information. Driven by federal incentives, public and private healthcare institutions have generated billions of electronic health records (EHRs), rich with clinical and demographic data. This data can be aggregated and analyzed to improve scientific research, drug safety and overall public health. However, the growth in health care data is so fast that issues surrounding data storage, integrity, modeling and sharing can diminish its tremendous potential. Guest blogger Roger Foster of DRC looks at this important health IT issue.