The goals of this overview is to discuss the ethics of telling the patient the truth, with some historical backgrounds and it is importance in medical practice, Justifying Less than Full Disclosure in some situations in which the truth may have a terrible impact on the occasional patient, and the influence of the culture on the health care professionals attitudes towards telling the patient the truth. Conclusion: The health care professionals need more awareness, and training in ethics of veracity and also in the communication skills especially in the context of breaking bad news in telling the patient the truth about diagnosis, treatment outcomes, and prognosis of any serious illness.