Kim Kardashian, 45, says she has “a little aneurysm,” revealing the diagnosis in a teaser for Season 7 of The Kardashians, which premiered Thursday on Hulu. The clip shows her undergoing a brain scan and suggesting stress may be to blame, as sister Kourtney reacts, “Whoa.” It’s unclear whether she has symptoms; her publicist did not immediately comment. Experts note brain aneurysms are relatively common and often monitored rather than treated, and say stress alone isn’t a proven cause. Risk factors include uncontrolled high blood pressure, smoking, and family history.

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