Viewers have already seen hints of Jason's body image issues, but the plot will become more prominent on screen later this year following its subtle build-up.
Scenes airing in June will see Jason's issues become more serious as he gets involved with a drug dealer.
Intrigued to learn that his new acquaintance deals steroids, Jason decides to buy some - but his desire for quick results leads to him overdosing.
News of the Hollyoaks storyline comes as the National Institute for Health and Care Excellence (NICE) today warned that the number of people putting themselves at risk by using steroids is "rapidly increasing".
Using steroids to enhance athletic performance or to build muscle mass can cause a variety of health problems. However, NICE research suggests that around 60,000 people injected anabolic steroids last year.
Regular Hollyoaks viewers will know that Jason has often expressed dissatisfaction with his appearance and has previously consulted his older brother Ziggy for advice on bulking up.
Body dysmorphic disorder (BDD) is an anxiety disorder which causes sufferers to spend a lot of time worrying about their appearance and to have a distorted view of how they look.
Jason's story will see his paranoia over his body image slowly escalate in the coming months.
Speaking to Digital Spy last year, Alfie Browne-Sykes - who plays Jason - confirmed that he was looking forward to delving deeper into his character's issues.
He said in December: "I am really hoping it will be explored more. At [Jason's] age, people can be concerned about their bodies and how they look and I think it'd be a great thing for us to get into more with Jason."
Digital Spy Soap Scoop video - hit play below for gossip on Ashley's life hanging in the balance in Emmerdale, Kylie's return story in Coronation Street, another Beale family crisis in EastEnders and a surprise visitor in Hollyoaks.