Hi,
Yes he can be treated with that habit but the first and foremost is that he should have a will power of his own for that. If he wants to quit the habit and if he does not have that will power then he may attend some counselling sessions by a psychiatrist or he should have a look at the following questions and try to answer them when he is alone
1. Why I am wasting money for some material.
2. What does chewing gives me except for oral cancer
3. we are paying money for making our self sick a ...
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