yes, we must distinguish between gambling and drug addicts. if some gambling addicts lose a lot of money, they are less exposed to the risk of mental damage. but drug addicts are more at risk of developing mental illness because the price is expensive and he must always use it.
If we know that certain gambler, we can but that is hard unless you can always see him gambling.
Gambling addiction or Drug addiction, they have the same negative results and that is the disease or the disorder of the individual's brain. It is said to be a disorder of the brain, I am not a doctor but I can agree with that. We should not compare these two whether what is worst or what is better instead we should raise the awareness of it to help the people with those disorders.