1.   He accepted that legalisation would not necessarily greatly increase addiction to hard drugs such as cocaine and heroin.

2.   Also, the department could ban ammonia compounds in cigarette products, which enhance nicotine delivery and thereby increase addiction.

3.   But this administration is taking only those steps that increase our addiction to fossil fuels and outdated and inefficient technologies.

4.   Philip Morris continued to fall following claims that it manipulated nicotine content to increase addiction.