- Smoking can raise the risk of dementia in later life.
- Researchers found signals that travel from lungs to brain.
- Certain lung cells send tiny particles after nicotine exposure.
- These particles change how brain cells use iron and energy.
- The changes are similar to those seen in dementia patients.
- Scientists made many lung cells in the laboratory to study them.
- They gave nicotine to the cells to see the effect.
- More research is needed before doctors can use this knowledge.
Difficult words
- dementia — A brain disease that affects memory and thinking
- researcher — A person who studies science or dataResearchers
- particle — A very small piece of matter or substanceparticles
- nicotine — A chemical in tobacco that affects the body
- iron — A metal the body uses for blood and health
- laboratory — A room where scientists do tests and experiments
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you know anyone who smokes?
- Have you ever visited a laboratory?
- What helps protect the lungs?
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