Question 1: Define the term 'obesity' and explain how it is measured in individuals.

Answer: Obesity is a condition characterized by excessive body fat that may impair health. It is commonly measured using the Body Mass Index (BMI), which is calculated by dividing a person's weight in kilograms by the square of their height in meters.

Question 2: List three common causes of obesity in teenagers.

Answer: Poor diet high in sugary and fatty foods, lack of physical activity, and excessive screen time or sedentary behaviour.

Question 3: Describe two health risks associated with obesity.

Answer: Obesity increases the risk of developing type 2 diabetes and heart disease.

Question 4: Explain how an unhealthy diet can contribute to obesity.

Answer: An unhealthy diet often contains high amounts of calories, sugar, and fats, which can lead to weight gain and fat accumulation if not balanced with physical activity.

Question 5: Identify three ways in which physical activity can help prevent obesity.

Answer: Burns calories, helps build muscle mass, and improves overall metabolism and cardiovascular health.

Question 6: Discuss the importance of a balanced diet in maintaining a healthy weight.

Answer: A balanced diet provides essential nutrients and appropriate calorie intake, helping to maintain energy balance and prevent excess weight gain.

Question 7: Describe the impact of sedentary behaviour, such as excessive screen time, on obesity risk.

Answer: Sedentary behaviour reduces physical activity levels, leading to fewer calories burned and a higher chance of weight gain and obesity.

Question 8: Sketch a simple weekly activity plan for a teenager aiming to stay healthy and avoid obesity.

Answer: A balanced plan might include at least 150 minutes of moderate exercise per week, such as brisk walking or cycling, along with daily activity like playing sports or running. The sketch should show a weekly timetable with varied activities distributed across the days.

Question 9: Outline two strategies that schools can implement to promote healthy weight among students.

Answer: Providing healthy meal options in school canteens and incorporating daily physical activity or PE classes into the timetable.

Question 10: Reflect on why it is important to address obesity at a young age.

Answer: Addressing obesity early can prevent the development of chronic diseases later in life, improve self-esteem, and promote lifelong healthy habits.