Is the brain chemistry factor?

The human brain is extremely complicated. Some research suggests that mental health problems may be linked to a variation in certain brain chemicals (such as serotonin and dopamine). But no one really understands how or why. Arguments that someone's brain chemistry is the cause of mental health problems are very weak. But even though there's no strong evidence to say that any mental health problems are caused by a chemical imbalance in our brains, you might find some people still use brain chemistry to explain them. Reasons for this might include: Some psychiatric medications work by acting on chemicals in the brain, and there's lots of evidence to show that medication can be effective in treating some symptoms of mental health problems (although drugs don't work the same way for everyone). Mental health problems can feel very personal and be hard to understand, so the idea that there could be a distinct physical cause for difficult thoughts, feelings and behaviours might make it feel easier to talk openly about your experiences and ask for help.