Initiated 75 years ago by scientists from Harvard University and called the longest lasting study on happiness conducted up until now, research results note that "good relationships make people happier and healthier."

Under the context of the study, which was initiated in 1938 and lasted for 75 years, two groups consisting of 724 men were observed. Currently, 60 of them are alive. There were sophomore students of Harvard University in the first group, while the second group consisted of children who were living in the most needy neighborhoods of Boston.

To be able to gather information on the life of the subjects, researchers conducted interviews with them and sent them questionnaires. They scanned the brain activity of the subjects, took blood samples, examined their medical records and met their families.

Within time, the spouses and the children of the subjects also took part in the research and it turned more conceptual. The results of the research, which is the first of its kind, are highly striking. The most distinctive finding is that "good relationships make people happier and healthier."

It was seen that people with unhappy relationships or lonely people are generally in sorrow, unhappy and lead an unhealthy life.

Psychiatrist Robert Waldinger, the current director of the ongoing part of the research, shared the results of the revolutionary research at his TED speech given in January 2016.