Possible Clues:

• Artery clogger
• Harmful compound in blood
• Alcohol let school tumultuously welcome queen
• Opening in corset unfortunately beginning to loosen - potentially dangerous stuff!
• Compound believed to harden arteries
• It's in her blood - in her cells too, perhaps
• Compound thought to cause artery hardening
• Forty seven's involved with learning about alcohol
• Many lousy places, let or otherwise, will affect the blood
• Level many seek to lower