The study targeted 20-year-olds.
Poorer wellbeing, higher levels of aggression and negative coping strategies have been found among pornography users.
A study from the ESRI also found those who watch porn report more depressive symptoms.
It interviewed a number of 20 year olds, who were offered the chance to answer the most sensitive questions in private.
Psychotherapist in Westmeath, Rory Hafford, says the sex education children are being exposed to is online porn:
The study also found young people who use pornography are less likely to use condoms.
Men who use porn also generally have poorer wellbeing and are less satisfied with their lives.
One of the report's authors, Emer Smyth, says young men often copy what they see:
Midlands 103 Launches Joint Christmas Appeal With Simon Community
Offaly Arson Attack Is An Attack On Society Itself - Taoiseach
Woman Facing Life In Prison After Double Midlands Murder
Housing Committee Chair Flags Cost Concerns Over Apartment Fire Safety Scheme
Justice Minister Wants People To Come Forward Over Offaly Arson Attack
New Report Warns Of “Poor Liquidity” As Ireland’s Housing Market Stalls
Laois TD Renews Calls For Updated Wind Farm Guidelines
Midlands Man To Be Laid To Rest Today
Anti-Racism Funding Granted For Offaly And Westmeath Groups
Gardaí Begin Murder Investigation After Child And Woman Dies In Offaly House Fire
Ashling Murphy Murder "Wrongly Accused" Granted Bail Over Theft Charge
Young Boy And Woman Killed In Offaly House Fire
Laois Makeup Artist Warns Of Expired Suncream Dangers
Lynx and Wolves In Ireland Pose Minimal Threat - Offaly Biodiversity
€4.5m Going To Midlands Suckler Farmers
Westmeath Writer Nominated Posthumously For Award
Seven Midlands Hotels Nominated For Gold Medal Hotel Awards
Cabinet Approves Major Expansion Of Midlands Garda HQ And Prison
Memorial Day Honouring Ashling Murphy Takes Place In Offaly
Midlands Town Left Shocked After Death Of Young Woman