I don't think that is true. Axl by 1990 was for the most part drug and alcohol free. While the rest of the band was out partying, he was off doing his own thing. Around this time he also started working out and getting himself into shape. But who really gives a shit he was going bald, end of story.
Not true. Some girl that met Axl on the 2002 tour said that he explained his weight gain as a result from breaking an addiction to amphetamines. This was sometime in the mid 90's. Axl didn't seem to be a wreckless partyer, and he was in good shape, but that doesn't mean he was exactly healthy. In fact, he was far from it.