It is not possible for a person to be healthy unless they have good mental health. Often mental health and general health ('physical' health) affect one another. Here are some examples of how mental illness is linked to other health conditions that are important:

• Millennium Development Goal 4: Child health children have an increased risk of diarrhoea if their mother suffers from undetected mental illness. Other studies have shown that the children of mothers with mental illness also have poorer development.
• Millennium Development Goal 5: Maternal health women who suffer from mental illness are more likely to have a prolonged labour and delivery. In women with complications during pregnancy or childbirth, the risk of mental illness after the birth is increased.
• Millennium Development Goal 6: HIV/AIDS we know that people with HIV/AIDS are at increased risk of developing mental illness. People with HIV/AIDS who also have a mental illness are more likely to get worse faster and die earlier than people in good mental health.