Many people know what anorexia is but do they know what pica is? In this lesson, I explain the process of defaecation where water and minerals are absorbed, the concept of a balanced diet, including the experiment of determining the energy value and the concentration of vitamin C in food and discuss the health issues related to eating habits, namely gastritis, anorexia nervosa, bulimia, muscle dysmorphia and pica.

Thumbnail: 9.5 Defaecation 9.6 Balanced Diet 9.7 Health Issues Relating to Eating Habits