Question

why and how does alcohol metabolize different in people?

Answer 1

Metabolism is the body's process of converting ingested substances to other compounds. Metabolism results in some substances becoming more, and some less, toxic than those originally ingested. Metabolism involves a number of processes, one of which is referred to as oxidation. Through oxidation, alcohol is detoxified and removed from the blood, preventing the alcohol from accumulating and destroying cells and organs.

Great website that I think answers your question perfectly, anything you need refer to it:
http://pubs.niaaa.nih.gov/publications/aa35.htm

Answer 2

Thank you :)