Comedian Chevy Chase went back to rehab for "tune-up" work on his alcohol addiction. The "Community" actor is still showing signs of morbid obesity that shocked everyone at the SNL 40 reunion in 2015. His weight gain (or bloating as it appeared) was so startling that one doctor suggested Chase was on steroids or had Cushing syndrome. His extreme obesity in connection to booze prompts a discussion substance abuse, recovery, and weight loss.

Chevy Chase could lose weight losing the booze

Chevy was always tall and lean but now at 72 faces serious weight problems along with addiction concerns. Are the two related? Chase admitted to having a drug addiction top prescription painkillers and receiving treatment in 1986.

He's just one of many Celebrities with prescription drug dependency. Octomom Nadya Suleman went to rehab of the prescription drug problem; Chase credited Betty Ford, and her treatment center started for helping him get clean.

Whether he's had an on-going alcohol dependency or not, Chevy said Betty Ford helped him have the courage to change. Back then he stayed lean so it may be that alcohol and not drugs caused the weight problems. Some prescription drugs, painkillers and definitely booze are linked to weight gain. Certain SSRI (selective serotonin reuptake inhibitors) antidepressants like Paxil (paroxetine).

What's a substance abuse clinic "tune-up"?

Chevy Chase checked into Hazelden Addiction Treatment Center which is associated with Melody Beattie, author of "Codependent No More", "The Language of Letting Go" and other self-help recovery books.

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Groups like Alcoholics Anonymous and its partners Al-Anon and Alateen use ideas contained in Beattie's books as part of the 12-step program.

These tools can be used very successfully in 12-step style weight loss programs like Overeaters Anonymous. Chase may have used AA or Hazelden materials at home but is finding it difficult to maintain outside a treatment setting.

That is often why people go to or return to a facility to do recovery work it a sheltered or controlled behavioral setting. Longtime sober people may struggle with addiction or substance abuse in situational troubles or if they cease to work their program one day at a time.