It is discussed how introducing new legislation around smoking, will make it harder for young people to purchase cigarettes, and therefore leads to a reduction in the behaviour to start smoking. 

Prof. Munafo says:

"Smoking is a real drive of social inequality and health inequality across different parts of society now".

Prof. Munafo goes onto discuss how it's typically "not an adult choice" to begin smoking and therefore this legislation will help to "push young people out of the risk window".