Why do we study pa arasites? Inability to raise livestock in Africa has led to poverty 2. Debilitating effects of parasitic diseases on humans results in a loss of labour 3. Bringing huge economic losses Thus, an understanding of parasites is important to students in biology the medical sciences, the veterinary sciences, and public health1. Inability to raise livestock in Africa has led to poverty 2. Debilitating effects of parasitic diseases on humans results in a loss of labour 3. Bringing huge economic losses Thus, an understanding of parasites is important to students in biology, the medical sciences, the veterinary sciences, and public health. Why do we study parasites?