Lesson Notes By Weeks and Term v4 - SHS 3
Nutrition and Diet in Health
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Nutrition and Diet in Health
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Subject: Physical Education Health Elective
Class: SHS 3
Term: 1st Term
Week: 8
Grade code: 3.1.2.LI.2
Strand code: 1
Sub-strand code: 2
Content standard code: 3.1.2.CS.1
Indicator code: 3.1.2.LI.2
Theme: Health Education
Subtheme: Nutrition and Diet in Health
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This lesson explores the critical link between what we eat and how well we perform in school. For you as SHS 3 students preparing for the WASSCE, understanding how nutrition fuels your brain is not just a theoretical exercise—it is a practical tool for success. We will delve into the science of how food impacts concentration, memory, and energy levels. We will pay special attention to a major national initiative, the Ghana School Feeding Programme (GSFP), to understand its intended role in boosting the academic performance of learners in basic schools and draw lessons for our own nutritional habits.
This section breaks down the core content needed to understand the topic thoroughly. A. Fundamental Definitions Nutrition: This is the scientific study of how food and drink affect our bodies, particularly in relation to health, growth, and performance. It involves the processes of ingestion, digestion, absorption, assimilation, and excretion of nutrients. Nutrients: These are the chemical substances in food that our bodies need to function. They are categorised into: Macronutrients (needed in large amounts): Carbohydrates (e.g., rice, banku, yam, gari): The body's primary source of energy. The brain runs almost exclusively on glucose, a simple sugar derived from carbohydrates. Proteins (e.g., beans, fish, meat, eggs): Essential for building and repairing tissues, including brain cells and neurotransmitters (chemicals that transmit signals in the brain). Fats (e.g., palm oil, groundnut oil, avocado): Provide concentrated energy and are crucial for building brain structure and absorbing certain vitamins. Omega-3 fatty acids are especially important for brain health. Micronutrients (needed in small amounts): Vitamins & Minerals (e.g., iron, iodine, zinc, Vitamin B complex): These are vital for thousands of bodily processes, including energy production, nerve function, and creating red blood cells to carry oxygen to the brain. Malnutrition: This refers to deficiencies, excesses, or imbalances in a person's intake of energy and/or nutrients. It covers two broad groups of conditions: Undernutrition: Includes stunting (low height for age), wasting (low weight for height), and micronutrient deficiencies. Overnutrition: Includes overweight, obesity, and diet-related non-communicable diseases. Academic Performance: This is a measure of a student's achievement across various academic subjects. It is not just about exam scores. It also includes: Class Attendance and Punctuality: Being present to learn. Concentration and Attention Span: The ability to focus during lessons. Class Participation: Engaging in discussions and activities. Cognitive Skills: Memory, problem-solving, and critical thinking. Behavioural Conduct: A well-nourished child is often less irritable and more cooperative. B. The Direct Link: How Nutrition Fuels Academic Work
Think of the brain as the engine of a high-performance car. It needs high-quality fuel to run efficiently. Energy for the Brain: The brain consumes about 20% of the body's total energy, primarily from glucose. A steady supply of energy from complex carbohydrates (like oats, yam, or brown rice) prevents energy slumps and keeps the brain alert. Simple sugars (like in soft drinks and sweets) cause a quick spike followed by a "crash," leading to poor concentration. Building Blocks for Brain Function: Proteins provide amino acids needed to create neurotransmitters like dopamine and serotonin, which regulate mood, focus, and motivation. Iron is crucial for making haemoglobin, which carries oxygen to the brain. Iron deficiency (anaemia) leads to fatigue, poor concentration, and a shortened attention span. Iodine is essential for the production of thyroid hormones, which are critical for normal brain development. Deficiency can cause cognitive impairment. B Vitamins help convert food into energy that the brain can use. C. The Ghana School Feeding Programme (GSFP) and its Role
The GSFP is a government initiative that provides one hot, nutritious meal per day to pupils in public primary schools and kindergartens. While its goals are broad (e.g., reducing poverty, boosting local agriculture), its impact on academic work is a primary objective.
How the GSFP aims to improve academic work: Increased School Enrolment and Attendance: Mechanism: For many low-income families, a guaranteed daily meal for their child is a powerful incentive to send them to school and keep them there. Academic Impact: Higher attendance means learners are present for more instructional hours, reducing the chance of falling behind. This is the most fundamental step to learning. Improved Concentration and Cognitive Function: Mechanism: The meal alleviates short-term hunger. A hungry child is distracted, irritable, and cannot focus on lessons. The provision of a balanced meal with carbohydrates (for energy) and protein (for brain function) helps stabilise blood sugar levels. Academic Impact: Learners can concentrate for longer periods, actively participate in class, and retain information more effectively. For example, a meal of `waakye` (rice and beans) with fish provides complex carbohydrates, complete protein, and essential fatty acids. Enhanced Micronutrient Intake: Mechanism: GSFP menus are designed to include locally available, nutrient-rich foods. For instance, including green leafy vegetables like `kontomire` in stews provides iron and vitamins. Fortified palm oil can provide Vitamin A. Academic Impact: Correcting or preventing micronutrient deficiencies (like iron-deficiency anaemia) directly tackles issues of fatigue and poor cognitive function, leading to more alert and capable learners. Reduced Morbidity (Sickness): Mechanism: Good nutrition strengthens the immune system. A well-nourished child is less likely to fall sick from common infections. Academic Impact: Fewer sick days mean less absenteeism and more consistent learning. Healthy children have the physical and mental stamina for a full school day.