Task 2 model answer: Rising childhood obesity

Childhood obesity has risen sharply in many parts of the world, raising concerns about children's long-term health. This essay will argue that the problem stems mainly from changes in diet and physical activity, and that it requires action from governments, schools and families together.

The primary cause is the widespread availability of cheap, highly processed food. Snacks and sugary drinks are heavily advertised, often specifically to children, and are frequently less expensive than fresh produce. At the same time, children are far less active than previous generations. Many are driven to school rather than walking, and leisure time that was once spent playing outside is now dominated by screens. The combination of higher calorie intake and lower energy use makes weight gain almost inevitable.

Several measures could reverse this trend. Firstly, governments could tax sugary drinks and restrict advertising of unhealthy food during children's programmes. Countries that have introduced sugar taxes have seen manufacturers reduce the sugar content of their products, which benefits all consumers. Secondly, schools have a central role to play: they could provide nutritious lunches and guarantee at least one hour of physical activity every day. Finally, parents need practical support, such as cooking classes and clear food labelling, so that healthy choices become easier to make at home.

Of these solutions, regulation is likely to have the greatest impact, because it changes the environment in which every family makes decisions, rather than relying on individual willpower.

In conclusion, childhood obesity is caused largely by poor diets and sedentary lifestyles. Tackling it effectively will require coordinated policies that make healthy food cheaper and physical activity a normal part of every child's day.