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1 (a) Obesity increases the risk of a person developing cardiovascular disease - Edexcel - GCSE Biology: Combined Science - Question 1 - 2018 - Paper 1
Question 1
1 (a) Obesity increases the risk of a person developing cardiovascular disease. Losing weight can reduce the risk of this disease occurring. Explain why exercise can... show full transcript
Worked Solution & Example Answer:1 (a) Obesity increases the risk of a person developing cardiovascular disease - Edexcel - GCSE Biology: Combined Science - Question 1 - 2018 - Paper 1
Step 1
Explain why exercise can cause weight loss.
Answer
Exercise is a physical activity that requires energy, which is derived from the body's stored fat. When we engage in exercise, our body burns calories in order to fuel the muscles being used. This increased energy expenditure can create a calorie deficit, which leads to the body starting to use fat reserves for energy, ultimately resulting in weight loss. Moreover, consistent exercise can boost metabolism, allowing the body to burn more calories even at rest.
Step 2
Explain how a gastric band helps a person to lose weight.
Answer
A gastric band is a device placed around the upper part of the stomach to create a small pouch. This small pouch limits the amount of food that can be eaten at one time, making the person feel full more quickly. As a result, a person may consume fewer calories overall, leading to weight loss. Additionally, the band can help a person develop healthier eating habits by encouraging them to eat smaller portions and resulting in slower eating, allowing more time for sensation of fullness to set in.