E-cigarettes, which provide nicotine without cigarette smoke, have been praised by health campaigners. Research has suggested that success rates for quitting smoking are higher with e-cigarettes than with other methods. However, rather than tackling their nicotine addiction, e-cigarette users have simply replaced one habit with another. It is true that cigarette smoke contains many hazardous compounds, and also that quitting smoking increases life expectancy and reduces the risk of many health problems. But nicotine also has its dangers: it has been associated with a range of conditions that we do not fully understand, and research has yet to establish the long-term effects of nicotine use outside of cigarette smoke.
Which one of the following is a conclusion that can be drawn from the above passage?
A. Using nicotine patches is an ineffective way to give up smoking.
B. Not everyone is able to give up smoking without nicotine replacement.
C. Smoking traditional cigarettes still poses a major risk to health.
D. E-cigarettes are just as harmful as traditional cigarettes.
E. People should not assume e-cigarettes are a safe alternative to traditional cigarettes.