Which subject is closely related to Home Economics in the area of nutrition and dietetics?

Nutrition and dietetics is the study of how food and nutrients affect health, growth, and disease prevention. Among the subjects listed, Biology is most closely related to Home Economics in this area because biology provides the scientific foundation for understanding how the human body digests, absorbs, and metabolises nutrients.

Key biological concepts that underpin nutrition and dietetics include:

• The structure and function of the digestive system (mouth, stomach, intestines, liver, pancreas)
• Enzyme action in breaking down carbohydrates, proteins, and fats
• Absorption of nutrients through the villi of the small intestine
• Cellular respiration and how the body converts glucose into energy
• The role of vitamins and minerals in metabolic processes
• Deficiency diseases and their biological mechanisms

While chemistry deals with the chemical composition of food molecules, and mathematics is useful for dietary calculations, neither is as directly linked to the biological processes of nutrition as biology itself. Physics has minimal direct relevance to nutrition and dietetics.