When people use tobacco it causes a chemical called dopamine to be released in the brain, when can result in short-term feelings of happiness, energy/alertness, stress relief, and increased concentration. Tobacco use can also result in reduced muscle tension and lower appetite. Many people try tobacco for the first time when they are young. There are many reasons why adolescents may start using tobacco, including:

• Peer pressure and wanting to fit in with social norms
• Emulating role models in their lives (including parents) or in the media
• Targeted advertising and promotion from the tobacco industry.

Nicotine – a naturally occurring chemical found in tobacco – is highly addictive, and can make it difficult for people to stop using tobacco once they have started (particularly if they start when they are young).