The political headlines have been relentless lately. Calls for impeaching the president. Debates over health care, immigration and gun control. Fights over who tweeted what.

Discussions of these issues can quickly get heated and toxic. They can affect relationships and even your health, according to a study published Wednesday in the journal PLOS ONE.

It seems that Americans "are suffering some pretty negative consequences because of their attention to and engagement in politics," says author Kevin Smith, a political scientist at the University of Nebraska, Lincoln, discussing the survey results.

In the months after the November 2016 elections, Smith began to hear anecdotes about people being stressed out by the election results and political divisions in the country. "I think most people have heard of, or experienced, or at least read a news story about losing a girlfriend or boyfriend or arguments over the Thanksgiving table," he says.

So he and his colleagues decided to find out how exactly politics was affecting Americans' mental health.

The team did an online survey of 800 people from a nationally representative sample and asked respondents a range of questions about how engaged they are in politics and how it is affecting their lives, health and well-being.

Nearly 40% of respondents said that politics was a cause of stress in their lives. About 20% reported losing sleep, feeling fatigued or being depressed owing to politics.

Between 10% and 30% of the respondents said that politics took an emotional toll on them, by causing anger, frustration, hate or guilt, or caused them to make comments they later regretted.

About 20% reported that politics had damaged their friendships. And, says Smith, "16% say that politics has made my home life less pleasant."

He isn't surprised that people are stressed out by politics. But "what I felt was kind of eye-popping was simply the sheer numbers of people saying that they experienced this," he says.

The overall findings of the new study "are consistent with what we've been seeing with our Stress in America survey," says Lynn Bufka, a psychologist and the associate executive director of practice, research and policy at the American Psychological Association.

In 2017, the APA annual survey on stress levels of Americans found that 57% of respondents said they were stressed by the current political climate, whereas 63% said that the future of the nation was a cause of stress for them. Sixty percent said they thought that the country was at its lowest point in history.

And over half of the respondents said that while they like to stay informed about news and politics, doing so stresses them out.

While the APA survey found that respondents from both ends of the political spectrum reported being concerned about the divisiveness of present-day politics, Democrats found it more stressful than Republicans or independents, says Bufka.

Smith's survey also found that respondents who were more likely to report negative consequences of politics were younger, unemployed, more liberal, more dogmatic, discuss politics more frequently and participate in politics at a higher rate.

Smith wonders if the stress from politics is a result of the current presidency or whether people who are most stressed by politics are those opposed to the party in power at any given point of time. "If we could sort of ... go back to the Obama era, would we find similar sorts of numbers, but with Republicans and right-leaning people [reporting feeling stressed]?"