Scientists have found a link between higher concentrations of melanin and increased risk of nicotine dependence and tobacco-related cancers. They believe this may explain why African-American smokers have a harder time quitting than whites. [ScienceDaily]
More from Jezebel
What Would You Miss Most If You Were Serving Time for Insider Trading? For Martha Stewart, It Was Lemons
I think there are as many physical reasons for addiction as there are mental ones. I have had a bad time trying to quit, and you can trace the veins in my legs through my near translucent skin. Smoking is a nasty habit and I want to stop!!