A combination of genetics and environment.
The main problem with cost-benefit analysis is that it requires translation of all value of a given proposal into economic terms. ... To be useful, any data, including economic data, must be considered in the context of the decision that is being made.
<span>HDL (high-density lipoprotein) hope this helps :)</span>
Genes are passed down so if someone in your family is an addict you're more likely to be.
