Globally, postnatal depression (PND) is a growing public health problem. PND affects 10 to 15% of women in Western society. It caused by a combination of biological, psychological and social factors. Two models have attempted to define and explain PND; the biomedical and the sociological models. The traditional biomedical model views PND as a medical condition which implies there is individual pathology and abnormality. Whilst the biomedical model...