IELTS Vocabulary for the Health Topic: Collocations You Can Rely On

Why health vocabulary needs care

Health is a frequent IELTS topic covering diet, exercise, healthcare systems and mental wellbeing. Candidates often reach for overly technical or overly vague vocabulary — either sounding like a medical textbook or relying on words like “healthy” and “sick” for everything.

The middle ground is a set of collocations that are precise but still general enough to use in an essay or a spoken answer without sounding forced.

As with any topic, it’s better to know ten collocations well than twenty that you’re not confident using correctly.

Ten health collocations with example sentences

These collocations work across diet, lifestyle, healthcare and mental health sub-topics, which are the most common angles examiners take.

• lead a healthy lifestyle — “People who lead a healthy lifestyle tend to live longer.”
• balanced diet — “A balanced diet should include fruit, vegetables and protein.”
• physical and mental wellbeing — “Regular exercise benefits both physical and mental wellbeing.”
• chronic illness/disease — “Obesity is linked to a number of chronic illnesses.”
• access to healthcare — “Not everyone has equal access to healthcare services.”
• preventive measures — “Vaccination is one of the most effective preventive measures.”
• sedentary lifestyle — “A sedentary lifestyle increases the risk of heart disease.”
• life expectancy — “Life expectancy has risen significantly over the past century.”
• public health campaign — “The government launched a public health campaign against smoking.”
• take its toll (on) — “Long working hours can take a toll on employees’ mental health.”

Common mistakes and corrections

A common slip is saying “healthy food” when “a balanced diet” would sound more precise and less repetitive across an essay. Another is confusing “disease” and “illness” — “disease” usually refers to a specific medical condition, while “illness” can be more general.

Learners also often misuse “affect”/“effect”: “Stress affects mental health” (verb) versus “Stress has an effect on mental health” (noun). Getting this wrong repeatedly can cost marks in Grammatical Range and Accuracy, not just vocabulary.

Avoid overusing “very” with words like “healthy” or “important” — collocations such as “crucially important” or “vital” sound more natural at higher bands.

Before and after

Before: “If people eat healthy food and do sport, they will not have sick very much.” After: “People who maintain a balanced diet and stay physically active are less likely to develop chronic illness.”

A learn–recall–apply routine for health vocabulary

Learning: choose five collocations and write a sentence for each about something you genuinely believe, such as the link between sleep and mental wellbeing.

Recall: the following day, try to recreate your sentences from memory, checking them against your original notes afterwards.

Apply: bring the collocations into a timed speaking or writing practice session within a few days, so they’re tested under realistic conditions.

Applying health vocabulary to essays and speaking

In Task 2, health essays frequently ask you to discuss causes of poor health or evaluate government responsibility, which is where “preventive measures”, “public health campaign” and “access to healthcare” fit naturally.

In Speaking, Part 1 might ask simple questions about your own diet or exercise habits, while Part 3 often moves to societal issues like ageing populations or healthcare funding — a good opportunity to use “life expectancy” and “chronic illness”.