1. Obesity has increased in many developed countries over the past decades. The data shown are from a study of obesity in a city in Switzerland over the time period 1993 to 2003. The study groups were composed of healthy male and female adults between the ages of 20 and 74.

(a) Identify the highest and lowest BMI in the 1993 sample.



(b) Outline the changes in the levels of obesity between 1993 and 2003.

(c) Discuss possible reasons for the differences between the two sets of data.


2. (a) Distinguish between vitamins and minerals.

(b) List two sources of vitamin D in human diets.

(c) Discuss the factors involved in deciding the amount of vitamin C an adult human should consume per day.


3. (a) Outline the importance of fibre in a balanced diet.

(b) Discuss whether consumers should choose foods with low food mileage.




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