Brain and behaviour · 2 min read
Addiction and the brain
It can be bewildering to watch someone continue using despite obvious harm. Understanding a little about how addiction affects the brain can help explain why.
The brain's reward system
The brain has systems that help us learn which things are rewarding, such as food, connection and rest. Alcohol and many drugs strongly activate these systems.
How repeated use changes things
With repeated use, the brain can adapt. Everyday pleasures may feel less rewarding, while cues linked to the substance, such as people, places or feelings, can trigger powerful cravings.
Effects on self-control and stress
Addiction can also affect parts of the brain involved in decision-making, impulse control and managing stress. This can make it harder to stop, even when someone genuinely wants to.
Change is possible
The brain can continue to adapt during recovery. Many people do recover, often with support, though it can take time.
Key considerations
- This is a simplified explanation. The science is complex and still developing.
- Understanding the brain doesn't remove personal responsibility.
- It may help to reduce blame, for both you and your loved one.
Suggested next steps
- Read 'Why addiction affects behaviour'.
- Explore recovery pathways.
- Learn about common misconceptions.
Further reading from trusted sources
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