Yes, I can back the statement that if there is even a hint of an alcohol problem then its important to quit. As MrsD pointed to, I have posted almost monthly about my progress from a wheelchair to walking due to alcohol abuse. Tingling feet, numbness, vomiting, weight loss, 24hour drinking, etc.
Once I cleared the alcohol out, and took the vitamin regime in my posts (noted above) I have reversed alcoholic neuropathy and I am almost back to "normal".
But, for me, this meant abstaining from alcohol entirely. There is no dabbling, no going back, and if you can abstain its the best way to go forward.
Walking is not overrated....