Scott Disick has come a long way since his scandalous past. But in The Kardashians Season 5 finale, he’s forced to open up about the “15 years” he spent struggling with substance abuse.

Disick, Kris Jenner, Khloé Kardashian and Kim Kardashian all take a test in the episode to find out their biological ages. While Khloé and Kim learn they are biologically many years younger than their actual age, Disick is told that his biological age is the same as his calendar age — which is 41.

“In your past, you’ve probably not focused on health as much as now,” the owner of the testing company explains, to which Disick confesses, “Yeah, there was probably 10, 15 years there when I was … uh … I was going pretty heavy in …”

But before he can finish, Kris bluntly chimes in, “Drugs.” Disick then turns to his former mother-in-law with somewhat of a death glare and sarcastically fires back, “Thanks. Drugs. Yeah, thanks.”

However, they aren’t finished dredging up the past just yet. As Kim clarifies that Disick struggled with both “drugs and alcohol,” the father-of-three admits, “Yeah, drugs and alcohol were a big, big …”

Once again, Disick gets cut off as Khloé adds, “Strippers. Prostitutes.”

While the Talentless founder reveals that “ᵴtriƥpers were involved,” he shuts down the notion that he was interacting with prostitutes, telling Khloe, “Prostitutes, not really.”

Overall, he says it was a whopping “15 years of really beating myself down.”

During his decade-long relationship with Kourtney Kardashian, Disick publicly struggled with drinking and substance abuse issues. The reality star had done multiple stints in rehab, and was even hospitalized for alcohol poisoning in 2014.

This isn’t the first time in this season of The Kardashians that Disick has dished on his unhealthy habits. While discussing his weight loss journey, Disick revealed that he was, at one point, eating “a whole box” of Hawaiian rolls every night and drinking “20 gingers a day” because he “didn’t know” that ginger ale was the same as soda.