Heritability of addiction is 50-60%, meaning environmental factors account for 40-50% of the risk.

“Anna said that addiction is about 50 to 60% heritable that's a huge amount obviously but you know it's a big enough amount that it can't be ignored but it's not so big an amount that the die is cast meaning just because you come from a line of people who have an addiction to one thing or another doesn't mean that your fate is sealed”

“meaning just because you come from a line of people who have an addiction to one thing or another doesn't mean that your fate is sealed so what are the other two things um that play a role in this and um she described them as nature and neighborhood so nature nurture neighborhood sorry I'm going to misspoke that right nature genes nurture how you're raised and neighborhood meaning the environment you're in now she wasn't able to provide or at least if she was I missed it um what the percent is for uh nurture versus neighborhood but again if heritability is 50 to 60% we're going to say 40 to 50% comes from how you were raised and I don't just mean like the obvious things but I also mean the subtle things right so are you raised around people that are engaging in a certain Behavior do you experience do you have experiences in life for example trauma that might predispose you to certain addictive behaviors”