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From supportive friendships to toxic colleagues, our relationships can our stress levels more than our jobs, finances, or even our diet and health habits. A new study that who we ourselves with can negatively affect our longevity. Scientists at Indiana University in the USA a study on how the people around us can the stress in our lives. The researchers on the effect people called "hasslers" had on us. A hassler an annoying individual who regularly us. Lead researcher Professor Brea Perry said, "having more hasslers is with accelerated biological aging...and how much wear and tear [people] on their body".

The study is in the journal PNAS. Researchers participants about the difficult relationships in their lives to hasslers. Dr Perry found around one third of the participants had at least one hassler in their social network. She said about 10 per cent had at least two hasslers. She that each additional hassler was with a 1.5 per cent faster pace of aging. Perry added: "It can actually days for that stress response to and for your body to go back to normal." She the adverse effects of accumulated stress from hasslers, saying: "When you that chronically, over and over again, it this long-term effect on the body."