“Environment” is an tricky word.
What the heck does “environment” mean? When I think of the word “environment” I think of dusty polluted cities and tree huggers.
Perhaps “lifestyle” is a better word. But, even then, it's tough to appreciate the vastness of this concept with one single word.
Here's a cheat code that'll help.
One of the best ways to see if something is more “lifestyle” or more “genetic” is to ask yourself, “If I were feral, would I…?”
If I were feral, would I still be skinny-fat? (Probably not.)
If I were feral, would I have hunched posture? (Probably not.)
If I were feral, would I be a giant ball of stress worrying about this month’s student loan bill? (Probably not.)
If I were feral, would I get hungry? (Probably.)
The fact that you talk let alone how you talk is a function of your environment. The food you enjoy eating, let alone to food you eat regularly is a function of your environment.
I mean, according to Wikipedia, some feral children are unable to learn how to poop in toilets. Even your defecation is tied to your environment.
Even beliefs. I live in America. I grew up with a preoccupation with death. I still remember when I realized my parents were going to die. I worried myself sick. I couldn't sleep.
Compare this to little Antonio in Mexico, where death doesn't carry as much negative connotations.
And, well, zebras don't get ulcers, dood.