The American Psychiatric Association has published a report that mute secrets increase the state of anxiety in humans and negatively affect the brain.
A team of researchers from Columbia University in New York studied a sample of 600 people, 96 percent of whom said they had secrets, mostly emotional.
People were asked how many times they thought of the secret they had in a month. The answer was two times, and the secret "caused them anxiety."
The study said that the concern is not caused by the content of the secret, but the process of keeping the secret, and not to share with anyone.
The study confirmed that the sample of people who retained secrets was more likely to suffer psychological harm due to the retrieval and concealment of bad memories.