A student took his own life by inhaling helium from a canister after reading how to do it from an online 'suicide guide'.
Luke Goodwin, 21, was found by his housemate in their student accommodation at Huddersfield University in January this year.
Now Luke's parents have called for explicit videos and 'suicide guides' to be removed from the internet.
Brian and Cynthia Goodwin told an inquest tighter controls were needed to prevent young people taking 'what may be considered an easy way out'.
Mr Goodwin, who attended the inquest on Wednesday with his wife Cynthia, appealed for tighter restrictions on internet sites which he said 'offer how-to-commit suicide guides to vulnerable people'.
He told the court: "We know there are limits to what can be controlled on the internet. Luke can't be brought back but if something can possibly be done that would be a positive way forward."
Mr Goodwin, from Hoylake, Wirral, also called for controls on the sale of helium canisters and a mechanism which prevents inhalation or makes the experience unpleasant.
The inquest heard evidence from Sarah Rayner, who described discovering a note on Luke's bedroom door which said to call 999 and that he had taken his own life.
She told Huddersfield coroner's court she had briefly spoken to Luke the night before and did not notice anything unusual about his manner.
A post-mortem examination confirmed cause of death as hypoxia caused by helium inhalation.
Coroner Mary Burke said Luke's death was a 'very tragic set of circumstances'.
She concluded: "I am satisfied beyond all reasonable doubt that Luke undertook steps to end his own life."