What is a mental health problem?
When people say mental health, they are talking about how people think and feel, and how they are coping with things that are happening in their life.
It is completely normal to feel sad, angry or worried from time to time. But when those feelings won't go away and they start to really affect day-to-day life, that is when there can be a problem.
Many people can find it difficult to open up when they are struggling with their mental health.