Ever had an exchange with someone in your circle that makes you feel like you sprouted a few more gray hairs?

You might not be totally imagining it.

A recent study published in Proceedings of the National Academy of Sciences this February found that those of us who have more people “who create problems or make life more difficult” in our lives (the researchers brand these types as “hasslers”) can be seen to have a higher age biologically than their true chronological age.

“Negative social ties, or ‘hasslers,’ are pervasive yet understudied components of social networks that may accelerate biological aging and morbidity,” the researchers wrote. “... Negative relationships are not rare within close relationships, as nearly 30% of individuals report having at least one hassler in their network.”

So, while you may be 35 on paper, the number of “hasslers” you encounter and negotiate with each day could have your body feeling mid-40s real quick — with researchers finding that an increased number of these “negative social ties” leads to “accelerated biological aging and a broad range of health outcomes” that can range from increased inflammation to having two or more chronic health conditions.