Step 1: Understanding the Concept: Nutrition science can be applied either to entire communities to prevent diseases or to specific individuals to manage existing illnesses.
Step 2: Detailed Explanation:
Public Health Nutrition is a field of study and practice that focuses on the promotion of good health and the prevention of diet-related illnesses in populations or communities. It involves assessing nutritional needs of groups and designing large-scale programs or policies.
Difference: The primary difference lies in the target audience and setting. Clinical Nutrition and Dietetics deals with the nutritional management and diet therapy of individual patients, usually within a healthcare or hospital setting, focusing on treating specific diseases. In contrast, Public Health Nutrition targets groups, communities, or nations with a focus on disease prevention and overall health promotion.
Step 3: Final Answer: Public Health Nutrition targets community health promotion, whereas Clinical Nutrition focuses on individual patient treatment.