Scrolling through Facebook or arguing on Twitter may not be as bad for our mental health as we feared, according to new research from the University of Auckland.

In one of the largest studies of its kind to date, Dr Sam Stronge from the University's School of Psychology used the New Zealand Attitudes and Values Survey database to question almost 19,000 adults on their use of social media and their psychological wellbeing.

The results showed a small positive association between social media and psychological distress, with every extra hour spent using social media in a given week associated with a slightly higher level of psychological distress as measured on the Kessler-6 scale.

That scale asks people questions such as how many times in a given period they feel hopeless, or how many times in a given week they feel depressed, and to rate the strength of those feelings on a scale from 0-4. A high score on the scale indicates someone may be struggling with serious mental illness.

'Previous international research has found that the way we use social media, by comparing ourselves to others for example, can make negative effects stronger, but overall we found that social media has very little to do with New Zealander's mental wellbeing,” says Sam.

Extrapolating the results from the study, the researchers estimated people would need to spend a huge amount of time on social medial – you would need 29 house in a single day – to experience a significant negative effect.

Unlike similar research, this latest study asked how people reported feeling after using social media compared to how they felt after doing a range of other activities such as looking after children, watching television or playing computer games.

Surprisingly, there was only a small difference in reported psychological wellbeing whether using social media or doing other ordinary things.

'We accounted for as many variables in the data as possible so that we could accurately see how good or bad one hour of social media was for people's mental wellbeing and those results couldn't be explained by anything else,” says Sam.

Another aspect of the study was that, unlike much of the previous research which has focused on adolescents, this one questioned adults aged 18 to 95 years.

The New Zealand Attitudes and Values Study is a longitudinal national probability study of social attitudes led by Professor Chris Sibley from the University of Auckland.