First lady Melania Trump says she is worried about the 'growing epidemic' of e-cigarette use among US adolescents and teens. In a tweet on Monday afternoon, she called for action to fight 'nicotine addiction', but didn't mention any specific plans. 'I am deeply concerned about the growing epidemic of e-cigarette use in our children,' she tweeted. 'We need to do all we can to protect the public from tobacco-related disease and death, and prevent e-cigarettes from becoming an on-ramp to nicotine addiction for a generation of youth.'