Alcohol & Substance Abuse · Lesson 2 · ~4 min
If you've ever asked "why me?" or "why can't I just stop?", this lesson is the honest answer: substance problems don't come from one thing, and almost never from simply being a "bad" or "weak" person. They grow from a mix of risk factors stacking up.
Scientists who study this describe substance use disorders the way they describe heart disease or diabetes: as conditions with many contributing causes, no one of which is the whole story.1 Some you were born with. Some came from the world around you. None were fully in your control as they were forming.
Roughly half of a person's risk for addiction is inherited — genes shape how your brain responds to a substance and how quickly use can take hold.1 This is why addiction often runs in families, the same way height or eyesight does.
The world you grew up and live in matters enormously: family stress, early trauma or abuse, who your friends use with, how easy a substance is to get, and daily pressure all raise risk.1
The earlier someone starts using, the higher the risk — because the brain keeps developing into the mid-twenties, and substances can shape it as it forms.1 Starting young isn't a moral failing; it's a risk multiplier.
Depression, anxiety, PTSD, and ADHD often travel with substance use. Many people are, without naming it, trying to quiet real pain — "self-medicating." Treating the underlying condition is part of treating the substance use.1
Sources