Describe at least three of the factors that play a role in why some people develop addictions.

(1)Genes and biology:Some genes and receptors make some people more susceptible to addiction.It is said that 40-60% of genetic heritage may account for a person's vulnerability to addiction.(2)Exposure:Early and frequent exposure to a behavior or substance can increase the risk for addiction.(3)Environment:Parental behavior,chaotic or abusive home life,and peer community attitudes are additional influences.(4)Nature of the behavior of substance:Behaviors or drugs that cause a rapid change in feelings may be inherently more addicting.