Of course it is not healthy if a person being addicted to anything, including gambling. However eating brain for me is a wrong word, even if it is just figurative sentence. Brain stay the same, it just concentrates on things, which are not that common.
Its not litterally mean that gambling ates our brain but what the speech mean is that gambling leads to addiction .
thats actually true to some but for the majority i dont think that they will become addicted on gambling because gambling is expensive as it needs capital everytime you play .
if i will be addicted i will only choose the addiction that does not cost me anything so that i can sustain my addiction but i dont want because that is bad .
I still play gambling but i do it moderately .