Study of human beings is more complex than machines and so is the study of their data. It is important to make accurate decisions which decide life and death matters and thus require error free and credible data. Therefore apart from the 3Vs- volume, variety and velocity; healthcare data should also have veracity. As much as it is required, it is difficult since there are issues in the healthcare data - is the information furnished about the patient, drug prescription, disease correct? Also since the data is huge and frequency is also high.it is difficult to clean the data, thus magnifying the credibility issue. To know more, read the following journal at: http://www.hissjournal.com/content/2/1/3