Spanish vocabulary · Intermediate
How to Say Immune System in Spanish: Sistema Inmunológico
Sistema inmunológico · noun phrase (masculine) · sees-TEH-mah een-moo-noh-LOH-hee-koh
Sistema inmunológico is the standard Spanish term. Sistema inmunitario is equally correct. Colloquially: las defensas (the defenses).
sees-TEH-mah een-moo-noh-LOH-hee-koh
Una buena alimentación fortalece el sistema inmunológico.
Good nutrition strengthens the immune system.
Immune System in Spanish: Quick Reference
Below are the most common Spanish words for immune system, with pronunciation and regional usage notes.
| Spanish | English | Pronunciation | Region / Register |
|---|---|---|---|
| sistema inmunológico | immune system | sees-TEH-mah een-moo-noh-LOH-hee-koh | Default, widely understood |
| sistema inmunitario | immune system | equally valid medical term | |
| defensas | immune system | colloquial — your defenses |
How Native Speakers Use Sistema inmunológico
Real example sentences across three contexts you'll actually run into.
Health advice
El ejercicio regular ayuda a mantener fuerte el sistema inmunológico.
Regular exercise helps keep the immune system strong.
Fortalecer/mantener fuerte el sistema inmunológico is a common health phrase.
Medical context
La enfermedad afecta directamente al sistema inmunitario.
The disease directly affects the immune system.
Sistema inmunitario is preferred in some medical texts.
Colloquial
Tengo las defensas bajas y me enfermo de todo.
My immune system is weak and I catch everything.
Las defensas is how most people casually refer to immune function.
Avoid These Mistakes When Using Sistema inmunológico
Saying sistema inmune
Incorrect: Mi sistema inmune está débil.
Correct: Mi sistema inmunológico está débil.
While gaining acceptance, standard forms are sistema inmunológico or sistema inmunitario.
Using inmunológico without sistema
Incorrect: Mi inmunológico funciona bien.
Correct: Mi sistema inmunológico funciona bien.
Inmunológico is an adjective and cannot stand alone. It must modify sistema.
Lock in Immune System Vocabulary with the Parrot Method
Why word lists alone don't stick
Memorizing a translation feels productive, but most learners forget 70% of what they studied within 48 hours. Vocabulary needs spaced repetition AND real-world exposure to transfer to long-term memory.
See Sistema inmunológico used by native speakers
Parrot's short-form videos feature native speakers using sistema inmunológico in real situations. Context-based exposure beats flashcards, you hear Una buena alimentación fortalece el sistema inmunológico. while watching someone live the moment, connecting meaning, sound, and rhythm at once.
Save, review, repeat, stay consistent
Tap any word to save it. Parrot's spaced-repetition system surfaces it right before you'd forget, no manual flashcard creation. The watch, parrot back, save, review cycle turns recognition into fluency at 2.7x the speed of traditional study.
Common Questions About Immune System in Spanish
- How do you say immune system in Spanish?
- Sistema inmunológico or sistema inmunitario. Colloquially: las defensas.
- Difference between inmunológico and inmunitario?
- Both correct. Inmunológico relates to immunology (the study). Inmunitario relates to immunity (the function). Used interchangeably.
- How do you say boost your immune system?
- Reforzar/fortalecer tu sistema inmunológico. Colloquially: subir las defensas.