Are beta-blockers contraindicated in asthma?

Question from a Member: Can you comment on why asthma and diabetes mellitus are contraindications to beta-blocker treatment? I use them very commonly for many things, e.g., akathisia,  essential tremor, anxiety, agitation/aggression, alcoholism, and performance anxiety. I have used them in people with asthma that was mild in nature and under control, and also in…