Food, Diet & Obesity in IELTS Essays: Vocabulary, Arguments & Sample Answer
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Food, diet and obesity form one of the most versatile topic categories in IELTS Writing Task 2. Questions might ask you to evaluate sugar taxes, discuss the rise of fast food, weigh up genetically modified crops, or propose solutions to childhood obesity. Students who rely on everyday language like "junk food is bad for you" quickly hit a ceiling on Lexical Resource and Task Response.
This guide gives you the precise vocabulary, ready-made arguments, and structural strategies you need to handle any food-related prompt at Band 7 and above.
Why Food & Diet Is Trending in IELTS 2026
Global obesity rates have reached historic highs, and governments around the world are debating how far the state should intervene in citizens' dietary choices. Sugar taxes have been introduced in over fifty countries, school lunch programmes are being overhauled, and food advertising to children faces growing regulation. At the same time, debates around genetically modified food, organic farming, and food waste are intensifying as climate change puts pressure on global food systems.
These real-world tensions make food and diet an ideal IELTS topic because they naturally produce balanced arguments about personal freedom versus government responsibility. Food questions also span every essay type — opinion, discussion, problem-solution, and advantages-disadvantages — which is why examiners return to this category year after year.
Common Food & Diet Essay Prompts
Opinion essays:
- Some people think that governments should ban fast food advertising aimed at children. To what extent do you agree or disagree?
- The most effective way to improve public health is to tax unhealthy food. Do you agree or disagree?
Discussion essays:
- Some people believe individuals are responsible for their own diet and health, while others think governments should do more to ensure citizens eat healthily. Discuss both views and give your opinion.
- Some argue that genetically modified food is the solution to world hunger, while others believe it poses serious health risks. Discuss both views and give your opinion.
Problem-solution essays:
- Obesity rates among children are increasing in many countries. What are the causes of this, and what solutions can be implemented?
Advantages-disadvantages essays:
- Many countries have introduced a sugar tax on soft drinks and unhealthy snacks. Do the advantages of this outweigh the disadvantages?
For help structuring these different essay types, see our guides on opinion essays and advantages-disadvantages essays.
Essential Food & Diet Vocabulary
Core Food and Nutrition Terms
| Term | Definition | Example sentence |
|---|---|---|
| obesity epidemic | The rapid global increase in obesity rates across populations | The obesity epidemic has placed an enormous financial burden on public healthcare systems worldwide. |
| nutritional literacy | The ability to understand and apply information about healthy eating | Improving nutritional literacy from an early age is essential for long-term public health outcomes. |
| processed food | Food that has been chemically or mechanically altered for convenience | A growing reliance on processed food has contributed to rising rates of heart disease and type 2 diabetes. |
| balanced diet | A diet containing appropriate proportions of all necessary nutrients | Schools play a critical role in teaching children the importance of maintaining a balanced diet. |
| calorie-dense | Containing a high number of calories relative to volume or weight | Calorie-dense fast food is often significantly cheaper than fresh fruit and vegetables. |
| genetically modified | Organisms whose DNA has been altered using genetic engineering | Genetically modified crops can increase yields, but consumer concerns about safety persist. |
Causes and Effects
| Term | Example sentence |
|---|---|
| sedentary lifestyle | A sedentary lifestyle combined with excessive calorie intake is the primary driver of weight gain. |
| contribute to chronic disease | Diets high in sugar and saturated fat contribute to chronic diseases such as diabetes and heart failure. |
| erode traditional dietary habits | The globalisation of fast food chains has eroded traditional dietary habits in many developing nations. |
| exacerbate health inequalities | Limited access to affordable fresh produce exacerbates health inequalities in low-income communities. |
| fuel the rise in childhood obesity | Aggressive marketing of sugary snacks to children fuels the rise in childhood obesity. |
Solutions and Policy Terms
| Term | Example sentence |
|---|---|
| impose a levy on sugary drinks | Several governments have imposed a levy on sugary drinks, resulting in measurable reductions in consumption. |
| implement public health campaigns | Implementing public health campaigns that promote nutritional awareness can shift consumer behaviour over time. |
| subsidise fresh produce | Subsidising fresh produce in low-income areas would make healthy eating a more accessible choice. |
| regulate food labelling | Stricter regulation of food labelling ensures consumers can make informed decisions about what they eat. |
| restrict advertising to children | Restricting food advertising to children reduces their exposure to marketing for calorie-dense, nutrient-poor products. |
| school nutrition programmes | Well-funded school nutrition programmes can establish healthy eating patterns that persist into adulthood. |
For guidance on using these terms with appropriate academic caution, see our hedging language guide.
Arguments and Ideas Bank
Government Regulation vs Personal Responsibility
For government regulation: Individuals make dietary choices within environments shaped by advertising, pricing, and availability. When unhealthy food is cheaper and more accessible than fresh produce, placing the entire burden on personal willpower is unrealistic. Policies such as sugar taxes, advertising restrictions, and mandatory nutritional labelling create conditions that make healthy choices easier for everyone.
Against government regulation: Diet is a personal matter, and excessive state intervention undermines individual freedom. People should be educated and trusted to make their own choices. Taxes on specific foods disproportionately affect low-income consumers and risk creating a nanny state that overreaches into private life.
Fast Food and the Obesity Epidemic
For restricting fast food: The rapid expansion of fast food chains correlates strongly with rising obesity rates, particularly among children and low-income populations. Fast food companies spend billions on marketing designed to override rational dietary decisions. Regulation — from advertising bans to mandatory calorie labelling — can reduce consumption without eliminating consumer choice entirely.
Against restricting fast food: Fast food provides affordable, convenient meals for working families and contributes significantly to employment. Targeting specific food types oversimplifies the causes of obesity, which include sedentary lifestyles, genetic factors, and portion sizes at home. Education and improved nutritional literacy are more sustainable than prohibition.
Genetically Modified Food
For GM food: Genetically modified crops can produce higher yields, resist disease, and require fewer pesticides, making them a potential solution to food insecurity in a world of rising population and climate pressure. Decades of scientific research have found no credible evidence that approved GM foods are harmful to human health.
Against GM food: Long-term health effects remain uncertain, and consumers have the right to choose what they eat based on complete information. GM agriculture concentrates market power in a small number of multinational corporations, threatening the livelihoods of small-scale farmers. Biodiversity may be reduced as GM monocultures replace traditional crop varieties.
School Lunch Programmes and Food Education
For investment: Children from disadvantaged backgrounds may receive their only nutritious meal of the day at school. Well-designed programmes improve concentration, attendance, and academic performance. Early exposure to balanced meals establishes dietary habits that carry into adulthood, reducing long-term healthcare costs.
Against current approaches: School meals are expensive to fund and often poorly implemented, with children rejecting unfamiliar healthy options. Parents, not schools, should bear primary responsibility for their children's diet. Resources might be better spent on nutrition education that empowers families to cook affordable, healthy meals at home.
Common Mistakes When Writing About Food & Diet
Using vague, informal language: Writing "junk food is really bad for people" signals a limited lexical range. Use precise alternatives: "The regular consumption of calorie-dense, nutrient-poor food is strongly associated with increased rates of cardiovascular disease and type 2 diabetes."
Presenting one-sided arguments: Claiming that sugar taxes solve obesity or that GM food is entirely dangerous ignores nuance. Even if you favour one position, acknowledge the opposing view briefly. For more on balancing perspectives, see our advantages-disadvantages essay guide.
Confusing correlation with causation: Many students write "fast food causes obesity" as though it were a simple equation. Stronger analysis recognises multiple factors: "While excessive fast food consumption is a significant contributor to obesity, sedentary lifestyles, genetic predisposition, and limited access to nutritional education also play important roles."
Repeating the same vocabulary throughout: Using "unhealthy food" in every sentence limits your Lexical Resource score. Vary your language: processed food, calorie-dense products, nutrient-poor snacks, convenience food, sugar-laden beverages, saturated-fat-heavy diets.
Model Paragraph: Band 7+ Example
Responding to: "Some people think that governments should tax unhealthy food to reduce obesity. To what extent do you agree or disagree?"
While taxing unhealthy food alone is unlikely to eliminate obesity, there is strong evidence that fiscal measures, when combined with broader public health strategies, can meaningfully reduce the consumption of harmful products. Countries that have imposed a levy on sugary drinks — such as Mexico and the United Kingdom — have reported measurable declines in sales of taxed beverages, particularly among low-income consumers who are most vulnerable to diet-related disease. Furthermore, the revenue generated from such taxes can be reinvested in subsidising fresh produce, funding school nutrition programmes, and implementing public health campaigns that promote nutritional literacy. Critics argue that food taxes disproportionately burden lower-income households, yet this concern can be addressed by directing tax revenue towards making healthy alternatives more affordable and accessible. Ultimately, a sugar tax should be viewed not as a standalone solution but as one component of a comprehensive strategy to address the root causes of the obesity epidemic.
Why this scores Band 7+:
- Clear topic sentence with a nuanced position (partial agreement)
- Precise vocabulary: "fiscal measures," "levy on sugary drinks," "nutritional literacy," "obesity epidemic"
- Develops the argument through cause-effect reasoning with real-world evidence
- Acknowledges the opposing view with a counter-argument and rebuttal
- Uses hedging appropriately: "is unlikely to," "can meaningfully reduce," "should be viewed"
Adapting to Any Food & Diet Prompt
Whatever specific angle the question takes, your preparation strategy is the same:
- Identify the specific aspect of food being asked about (obesity, GM food, school meals, advertising, food waste, sugar tax, traditional diets)
- Select 2-3 relevant vocabulary items from your bank for that sub-topic
- Choose one cause and one solution (for problem-solution) or one argument per side (for discussion)
- Structure using the appropriate essay type framework
- Develop each point with explanation, evidence, and consequence — not assertions alone
You do not need to be a nutritionist or policy expert. You need to express clear ideas about health and society using precise, academic English. For more topic-specific vocabulary, see our health vocabulary guide.
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