@jespah,
For a lot of his adult life Helm was a chain smoker and had other substance issues in the past, sadly.
Rock & Roll (and working on the road) lifestyle is a killer. The higher you go, the greater the temptations and the need for diversion...and the steeper the fall. No one seems to make it much past 60. Keith Richards is one of the few exceptions to the rule. He just [url]looks like he died[/url].
The Gibbs family had some very bad luck and perhaps some unfortunate genes (intestinal issues). To my knowledge it was only Andy, the youngest, that had succumbed to complications from drug abuse issues (alcohol and cocaine) .