Chapter 1. Introduction to Nutrition.pdf

© 2024 Dr. Hafiz Shahbaz Chapter 1: Introduction to Nutrition 1. Understanding Food:  Definition: Food consists of substances that you eat or drink to sustain life and promote health. It originates from plants or...

© 2024 Dr. Hafiz Shahbaz Chapter 1: Introduction to Nutrition 1. Understanding Food:  Definition: Food consists of substances that you eat or drink to sustain life and promote health. It originates from plants or animals and can either be consumed in its natural form or processed in factories. 2. Importance of Food:  Role: Food is essential for your body as it supports growth, organ development, and overall maintenance of life. The energy derived from food is measured in kilocalories (Kcal), which fuel your body's functions and activities. 3. What is Nutrition? tonourish  Definition: Nutrition is the process of providing or obtaining the food necessary for health and growth. It involves the ingestion, digestion, absorption, and utilization of nutrients from food, beverages, and water.  Nutrients: These are substances in food that your body needs to function correctly. Nutrients are categorized into macronutrients and micronutrients. 4. Types of Nutrients:  Macronutrients: Needed in larger amounts, these include carbohydrates, proteins, building energ and fats (lipids). They provide energy and are the building blocks for body tissues.  Micronutrients: Required in smaller quantities, these include vitamins and minerals, Function main which are crucial for various body functions, including the immune system and bone health. water 5. Organic and Inorganic Nutrients:  Classification: Nutrients are classified as: o Organic: Carbohydrates, proteins, fats, and vitamins, which contain carbon. o Inorganic: Minerals and water, which do not contain carbon. 6. Link Between Nutrition and Health:  Importance: Proper nutrition is vital for maintaining good health and preventing diseases. Poor dietary choices can lead to nutritional deficiencies, illness, and even life-threatening conditions. 7. Understanding Malnutrition: Poornutrition  Definition: Malnutrition includes both undernutrition (not getting enough nutrients) and overnutrition (excessive intake of nutrients), both of which can negatively impact health. e  Causes: Malnutrition can result from an unhealthy or imbalanced diet. innit  © 2024 Dr. Hafiz Shahbaz 8. Health, Growth, and Maintenance: Health: Health encompasses more than just the absence of disease; it includes overall stabling physical, mental, and social well-being.  Growth: Refers to the physical, mental, and spiritual development that occurs as you mature.  Maintenance: Involves the ongoing processes in the body that help to repair tissues goingand maintain a stable internal environment, essential for long-term health. keepon 9. Energy Production: needff.atytions  Process: The body converts nutrients into energy through chemical reactions. This energy is necessary for all bodily functions, including movement, digestion, and cellular activities.  Role of Nutrients: Nutrients act as the fuel for these energy-producing processes, ensuring the body remains active and alive. Check Your Knowledge: notall 1. Food primarily comes from artificial sources like factories. [False] 2. Macronutrients are required by the body in larger quantities compared to micronutrients. [True] 3. Nutrients are only found in solid food and not in beverages or water. [False] whateveryou'lleatwill 4. Lipids are examples of micronutrients. [False] ma giveyouwhatuneed yay 5. Health is solely defined as the absence of physical illness. [False] notonlypungical 6. Malnutrition can only result from overeating and excessive food consumption. [False] 7. Growth involves only physical maturation and has no connection to nutrition. [False] 8. Maintenance processes in the body include tissue repair and renewal. [True] 9. Energy production in the body is not influenced by the nutrients consumed. [False] it isinflused are 10. Unhealthy nutrition can lead to severe nutritional inadequacies and diseases. [True]