The law also imposed some heavy reporting requirements on the states as a condition for receiving the block grants.

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Schizophrenics, it has recently been found, are likely to be heavy smokers because nicotine is good for their condition.

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Though it is not, in itself, a life-threatening condition, trimethylaminuria leads many sufferers to heavy smoking (in an effort to mask their appalling odour) or, in at least one case, to suicide.

ECONOMIST: Hook, line and stinker