Is 'deficiency disease' the same as 'malnutrition'?

Not exactly. 'Malnutrition' is a broader term encompassing both undernutrition (which includes deficiency diseases) and overnutrition (obesity). A deficiency disease is a specific condition under the umbrella of undernutrition.

Can you have a deficiency disease from lacking something other than a vitamin?

Yes. Classic deficiency diseases can be caused by a lack of minerals (e.g., iron-deficiency anaemia, iodine deficiency disorders), essential fatty acids, or essential amino acids (e.g., kwashiorkor from protein deficiency).

Are deficiency diseases still a problem today?

Yes, especially in developing countries and among vulnerable populations everywhere. While diseases like scurvy and rickets are rare in developed nations, iron-deficiency anaemia and vitamin D deficiency remain global public health concerns.

What's the difference between 'deficiency disease' and 'metabolic disease'?

A deficiency disease is caused by an inadequate intake or absorption of an external nutrient. A metabolic disease is typically caused by the body's internal inability to properly process or utilise substances, often due to genetic enzyme defects, though some can have nutritional components.

deficiency disease

UK/dɪˈfɪʃənsi dɪˈziːz/US/dɪˈfɪʃənsi dɪˈziz/

Technical / Academic / Medical

My Flashcards

Definition

Meaning

A health condition caused by the lack of an essential nutrient in the diet.

More broadly, any disorder resulting from the absence or insufficiency of a necessary substance, factor, or element in the body, such as a vitamin, mineral, hormone, or enzyme.

Linguistics

Semantic Notes

Primarily used in medical, nutritional, and public health contexts. Implies a direct causal link between a specific deficiency and the resulting pathological condition.

Dialectal Variation

British vs American Usage

Differences

No significant difference in meaning or usage. Spelling conventions are consistent (e.g., 'anaemia' vs. 'anemia' for a specific type is a separate word-level difference).

Connotations

Same technical, clinical connotations in both varieties.

Frequency

Equally common in relevant professional and academic contexts in both the UK and US.

Vocabulary

Collocations

strong

vitamin deficiency diseaseprevent a deficiency diseasesuffer from a deficiency diseaseiodine deficiency disease

medium

cause a deficiency diseasecommon deficiency diseasenutritional deficiency diseaserisk of deficiency disease

weak

severe deficiency diseasechronic deficiency diseasespecific deficiency diseasemajor deficiency disease

Grammar

Valency Patterns

deficiency disease of [NUTRIENT: vitamin A]deficiency disease caused by a lack of [NUTRIENT: iron]

Vocabulary

Synonyms

Strong

avitaminosis (for vitamins)malnutrition-related illness

Neutral

nutritional disorderdietary disease

Weak

conditionailmentsyndrome

Vocabulary

Antonyms

healthnutritional sufficiencywellness

Usage

Context Usage

Business

Rare. Might appear in CSR reports or corporate wellness programme literature.

Academic

Frequent in medical, biological, nutritional science, and public health texts and research.

Everyday

Uncommon. Typically used when discussing nutrition, historical diseases (e.g., scurvy), or in educational contexts.

Technical

The primary domain of use. Precise term in clinical diagnostics, epidemiology, and nutritional science.

Examples

By CEFR Level

Scurvy is a famous deficiency disease from not eating enough fruit.
Children need good food to avoid deficiency diseases.

A lack of vitamin D can lead to the deficiency disease called rickets.
In the past, sailors often got deficiency diseases on long voyages.

Public health programmes aim to eradicate common deficiency diseases like goitre through food fortification.
The doctor diagnosed a mild deficiency disease linked to his highly restrictive diet.

The epidemiology of iodine deficiency diseases has been transformed by universal salt iodisation.
Research suggests that subclinical deficiency diseases may have significant long-term impacts on cognitive development.

Learning

Memory Aids

Mnemonic

Think: A DISEASE caused by a DEFICIENCY. Imagine a plant with a 'vitamin deficiency' starting to wilt with 'disease' spots.

Conceptual Metaphor

ABSENCE IS SICKNESS / LACK IS A PATHOGEN.

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

Avoid word-for-word translation as 'болезнь дефицита'. The standard Russian term is 'авитаминоз' (for vitamins) or 'болезнь, связанная с недостаточностью [чего-либо]'. The phrase 'дефицитная болезнь' is not standard.
Do not confuse with 'infectious disease' ('инфекционное заболевание').

Common Mistakes

Misspelling as 'defficency disease'.
Using it interchangeably with 'eating disorder' (e.g., anorexia) or 'food allergy'.
Incorrectly capitalising it unless part of a proper name (e.g., 'Vitamin D Deficiency Disease').

Practice

Quiz

Fill in the gap

Pellagra, a caused by a lack of niacin, was once widespread in regions where maize was a staple food.

Multiple Choice

Which of the following is a key characteristic of a 'deficiency disease'?

FAQ

Frequently Asked Questions

: Not exactly. 'Malnutrition' is a broader term encompassing both undernutrition (which includes deficiency diseases) and overnutrition (obesity). A deficiency disease is a specific condition under the umbrella of undernutrition.
: Yes. Classic deficiency diseases can be caused by a lack of minerals (e.g., iron-deficiency anaemia, iodine deficiency disorders), essential fatty acids, or essential amino acids (e.g., kwashiorkor from protein deficiency).
: Yes, especially in developing countries and among vulnerable populations everywhere. While diseases like scurvy and rickets are rare in developed nations, iron-deficiency anaemia and vitamin D deficiency remain global public health concerns.
: A deficiency disease is caused by an inadequate intake or absorption of an external nutrient. A metabolic disease is typically caused by the body's internal inability to properly process or utilise substances, often due to genetic enzyme defects, though some can have nutritional components.