Untreated Sleep Apnea Speeds Heart Aging and Raises Death Risk — English Level A1

Scientists studied untreated sleep apnea in laboratory animals.
The study was done in a laboratory with mice.
Oxygen dropped again and again during mouse sleep.
Mice exposed to low oxygen died much earlier.
Their hearts showed clear signs of early aging.
Blood pressure increased and heart work worsened significantly.
Blood vessels became less flexible and weaker.
Researchers say this problem can shorten life.
Early diagnosis and treatment are very important.

Difficult words

apnea — a condition with pauses in breathing during sleep

sleep apnea

untreated — not given medical care or treatment

oxygen — the gas animals and people need to breathe

diagnosis — the process of finding what illness someone has

vessel — a tube that carries blood in the body

Blood vessels

flexible — able to bend or change shape easily

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Untreated Sleep Apnea Speeds Heart Aging and Raises Death Risk^{CEFR A1}

Difficult words

Discussion questions

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Untreated Sleep Apnea Speeds Heart Aging and Raises Death Risk^{CEFR A1}