A new report says Ireland's suicide rate has stopped rising since the recession and provisional data suggests a decreasing trend.

The HSE's National Office for Suicide Prevention (NOSP) Annual Report for 2016 says there were 399 suicides last year compared with 451 the previous year, according to provisional figures.

Over 80% of cases involve men.

Cases of self-harm appear to be following a similar trend and has also stopped rising.

Over 8,900 individuals were seen at hospitals in cases of self-harm last year, representing a slight increase on 2015.

There has also been a significant increase in self-harm among women aged between 25 and 29 years.

The HSE says that over €11.8 million was invested in suicide prevention in 2016.

Assistant National Director and Head of the NOSP John Meehan said the highest proportion of deaths, by age and gender, are men aged 45 to 54.

Speaking on RTÉ's Morning Ireland, he said this could be attributed to the recession and added that social media could play a part in the suicide rate.

Mr Meehan said work is being done with Google, Twitter and Facebook in order to help enforce a positive message online.

"We're lucky here in Ireland that we have the HQ's of Google, Twitter and Facebook and we're working with them. They have a mental health specialist within that and we can alert and we can take down the negative aspect," said Mr Meehan.

The NOSP Annual Report for 2016 and the National Suicide Research Foundation's Self Harm Registry Report 2016 will be launched later today by Minister of State with Special Responsibility for Mental Health and Older People, Jim Daly.