What is the life expectancy of a drug abuser?

What is the life expectancy of someone who occasionally abuses cocaine, ecstasy, and pain killers? On a regular, abuses marijuana and cigarettes (in large quantities daily). Has a past history of abusing methamphetamine. And has also done acid and shrooms.
What is the life expectancy of someone who occasionally abuses cocaine, ecstasy, and pain killers? On a regular, abuses marijuana and cigarettes (both in large quantities daily). Has a past history of abusing methamphetamine. And has also done acid and shrooms.

Please leave the age # you think!