A report by the <a href="https://en.wikipedia.org/wiki/Surgeon_General_of_the_United_States" id="mwAUg" rel="mw:WikiLink" title="Surgeon General of the United States">Surgeon General of the United States</a> <a href="https://en.wikipedia.org/wiki/C._Everett_Koop" id="mwAUk" rel="mw:WikiLink" title="C. Everett Koop">C. Everett Koop</a> states that the <a href="https://en.wikipedia.org/wiki/Substance_use_disorder" id="mwAUo" rel="mw:WikiLink" title="Substance use disorder">addictive</a> properties of <a href="https://en.wikipedia.org/wiki/Nicotine" id="mwAUs" rel="mw:WikiLink" title="Nicotine">nicotine</a> are similar to those of <a href="https://en.wikipedia.org/wiki/Heroin" id="mwAUw" rel="mw:WikiLink" title="Heroin">heroin</a> and <a href="https://en.wikipedia.org/wiki/Cocaine" id="mwAU0" rel="mw:WikiLink" title="Cocaine">cocaine</a>.