Nicotine can affect brain development and functioning in young people. Young people are particularly vulnerable to using e-cigarettes and vaping devices and to their effects. The younger a person is when he or she tries nicotine, the greater the risk of addiction. The developing brain is more vulnerable to the effects of addictive substances than a fully developed adult brain. Additionally, nicotine can disrupt brain development, interfere with long-term cognitive functioning, and increase the risk of various mental and physical health problems later in life. Make sure your young adult is aware of the dangers of e-cigarettes and other vaping devices.