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⚕️ Health Vocabulary for IELTS & TOEFL

Essential health-related vocabulary for discussing wellness, disease, medical treatment, and lifestyle—important for IELTS discussions and health-themed essays.

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Health word list

preventive adj — designed to stop something harmful from happening before it occurs
“Preventive healthcare emphasizes regular checkups and vaccinations.” ↗ preventative
diagnosis noun — the identification of an illness or condition based on symptoms and tests
“Early diagnosis of cancer significantly improves treatment outcomes.” ↗ identification
rehabilitation noun — therapy or treatment to restore function after injury or illness
“Physical rehabilitation helps stroke patients regain mobility.” ↗ recovery therapy
epidemic noun — a disease spreading rapidly among many people in a population
“The obesity epidemic affects children and adults in developed nations.” ↗ outbreak
sedentary adj — characterized by much sitting and little physical activity
“Sedentary lifestyles increase risks of heart disease and diabetes.” ↗ inactive
immunization noun — the process of making someone immune to disease through vaccination
“Childhood immunization programs have eradicated diseases like polio.” ↗ vaccination
chronic adj — lasting a long time; of a disease persistent and long-lasting
“Chronic conditions like diabetes require ongoing medical management.” ↗ long-term
malnutrition noun — lack of proper nutrition or vitamins causing poor health
“Malnutrition affects millions of children in developing countries.” ↗ under-nutrition
metabolic adj — relating to the chemical processes that keep organisms alive
“Metabolic disorders affect how the body processes food for energy.” ↗ biochemical
symptom noun — a sign or indication of disease or illness in a person
“Fever and cough are common symptoms of respiratory infections.” ↗ sign
pandemic noun — a disease outbreak affecting very large geographical areas and populations
“The COVID-19 pandemic disrupted healthcare systems worldwide.” ↗ widespread outbreak
mortality rate phrase — the number of deaths in a population within a specific time period
“Infant mortality rates have declined significantly in most developed countries.” ↗ death rate
therapeutic adj — relating to healing or treatment of disease or psychological problems
“Therapeutic exercises help manage chronic pain conditions.” ↗ healing
prognosis noun — a prediction of the likely course or outcome of a disease
“The prognosis for early-stage cancer treatment is generally favorable.” ↗ outlook
pharmacology noun — the science of drugs and their effects on living organisms
“Advances in pharmacology have created new treatments for Alzheimer's disease.” ↗ drug science
holistic health phrase — an approach treating the whole person including physical, mental, and social aspects
“Holistic health practices combine conventional medicine with wellness therapies.” ↗ whole-person care
epidemiologist noun — a scientist who studies the spread and control of diseases
“Epidemiologists track disease patterns to prevent future outbreaks.” ↗ disease researcher
comorbidity noun — the simultaneous presence of two or more diseases in one person
“Diabetes and hypertension often occur together as a comorbidity.” ↗ co-occurring condition
clinical trial phrase — a research study testing medical treatments on volunteer participants
“New medicines must complete clinical trials before approval.” ↗ medical study
vulnerable population phrase — groups at higher risk of health problems due to social or biological factors
“The elderly and immunocompromised are vulnerable populations during pandemics.” ↗ at-risk group
pathogen noun — an organism or agent that causes disease in its host
“The pathogen responsible for the outbreak was identified through laboratory analysis.” ↗ disease-causing agent
epidemiology noun — the study of disease patterns and factors affecting health in populations
“Epidemiological research revealed correlations between diet and cardiovascular disease.” ↗ disease study
immunotherapy noun — medical treatment that stimulates the immune system to fight disease
“Immunotherapy has revolutionized cancer treatment by harnessing the body's defenses.” ↗ immune-based treatment
placebo noun — a substance or treatment that has no active medical effect but may provide relief through psychological means
“The placebo effect demonstrated that belief influences perceived pain reduction.” ↗ dummy treatment
etiology noun — the underlying cause or origin of a disease or medical condition
“Understanding the etiology of autism remains an active area of research.” ↗ cause, origin
symptomatology noun — the pattern of symptoms characteristic of a disease or condition
“The symptomatology of depression varies significantly among individuals.” ↗ symptom pattern
prophylaxis noun — medical treatment given to prevent disease rather than treat existing illness
“Prophylactic vaccination protects populations against infectious diseases.” ↗ disease prevention
metabolism noun — the chemical processes in living organisms that maintain life and enable growth
“Metabolic disorders affect how the body processes nutrients and produces energy.” ↗ biological processes
benign adjective — not harmful; describing a disease or tumor that is not cancerous
“The biopsy revealed a benign cyst that required no further treatment.” ↗ non-malignant
acute adjective — sudden in onset and severe; describing short-duration medical conditions
“Acute respiratory infections typically resolve within two weeks with supportive care.” ↗ sudden, severe
morbidity noun — the state of being diseased or the rate of disease occurrence in a population
“Morbidity rates from preventable diseases have decreased with improved sanitation.” ↗ disease incidence
antigen noun — a substance that triggers an immune response by stimulating antibody production
“The antigen structure determines whether the immune system will recognize a pathogen.” ↗ immune stimulant
osteoporosis noun — a medical condition characterized by weakened bones and increased fracture risk
“Osteoporosis disproportionately affects postmenopausal women due to hormonal changes.” ↗ bone weakness
empirical adjective — based on observation, experience, or experimental data rather than theory alone
“Empirical evidence demonstrates that regular exercise reduces cardiovascular disease risk.” ↗ evidence-based, experimental

How to actually use health vocabulary in the exam

A word list is where vocabulary study starts and where most of it unfortunately stops. Lexical Resource is a quarter of your Writing and Speaking band, and it is not scored on how many unusual words you produce — it is scored on precision, collocation and word formation. A common word used exactly beats a rare one used approximately, every time.

Where health actually comes up. Topic vocabulary earns most in Speaking Part 3, where questions turn abstract and general, and in Writing Task 2, where a precise word can carry an argument a vague one cannot. It matters least in Listening and Reading, where you need to recognise paraphrase rather than produce it — which is exactly why passive list-reading feels like it is working while your Speaking and Writing bands stay where they were.

A realistic way to use this page. Take five words, not fifty. Write one sentence with each, on a question you might genuinely be asked. Say them out loud, because a word you have never pronounced will not arrive under pressure. Come back in a few days and produce them from the definitions alone. Five words you can use are worth more in the exam than fifty you can recognise, and that ratio is the whole reason most vocabulary study does not move a band.

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