Whitney Houston
The global superstar died at the age of 48 after drowning in a bathtub in 2012. She achieved lots of success in the 1980s and 90s, selling over 170 million albums and starring in the famous movie, The Bodyguard.
But things took a different turn in her later years when she had to struggle with alcohol abuse and drugs. An autopsy report into her death revealed that heart disease and cocaine use contributed to her death.
But what many have described as her downfall was her marriage to Bobby Brown in 1992. Basically, the marriage between the two was associated with drugs, constant fighting, and other weird behaviours.
Houston in an interview after their divorce admitted that she eventually stopped caring about her music career.
The drug use got so bad that even when she got out of that toxic marriage, it ruined her career until her demise.