This assumption becoming-a-book-review-blogger is simply untrue. Especially when talking about opium and its related drugs, there is a strong tendency to make the unstated assumption that addiction--in and of itself--is harmful. In other words, opium users decided how much they would spend on opium, based on price, just becoming-a-book-review-blogger like they would with any other commodity. When England increased imports and decreased prices to stop other countries from selling to China, use went up.
An interesting aspect of opium use in China during this time was that users still made rational economic decisions about their use. becoming-a-book-review-blogger If opium use as medicine is included, this number is certainly higher than 3. 8%--very close to the Chinese peak, when opium was freely available. As soon as China became involved in global legal commerce, the opium started flowing in and the addicts becoming-a-book-review-blogger started piling up.