Kanye West

Kanye West

Kanye West allegedly thinks Scott Disick is "toxic" for Kourtney Kardashian.

The 'New Slaves' rapper is reportedly very concerned about his pregnant sister-in-law, as he thinks her long-term boyfriend, who was hospitalised for alcohol poisoning earlier this year, is "a hot, toxic, mess" and is partying "like the world is going to end."

A source close to the 37-year-old star, who has 15-month-old daughter North with wife Kim Kardashian West, 33, told HollywoodLife.com: "Kanye would never leave Kim when she was pregnant, unless it was to bring money back home to the family.

"Big money. He didn't leave Kim alone when she was pregnant unless he was clocking six figures."

The insider said the protective star doesn't understand why Scott, who already has son Mason, four, and daughter Penelope, two, with Kourtney, wants to party without his girlfriend, 35, as his philosophy is "when your girl is pregnant, guess what -- you're pregnant, too."

'Keeping Up with the Kardashians' beauty Kourtney recently told Scott, 31, on the show that she wanted him to sober up or leave.

She said: "Unless you want to be sober, then I don't want you here.

"If you want to die then you can continue to act this way."

Scott has been struggling since the tragic deaths of his mother, Bonnie, last October and father Jeffrey less than three months later in early January.