RA Risk Increased By Secondhand Smoke Exposure During Childhood

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Childhood exposure to secondhand smoke may heighten the risk of developing rheumatoid arthritis (RA) later in life, even in non-smokers, according to new research.

Childhood exposure to secondhand smoke may heighten the risk of developing rheumatoid arthritis (RA) later in life, even in non-smokers, according to new research.

RA, the most common type of arthritis, is believed to be triggered by a mix of environmental and genetic factors. Although tobacco exposure is known to be a contributing environmental factor to increased RA risk, limited data exist on the role of secondhand smoke in triggering the disease.

The study, published in the journal Rheumatology, investigated the potential association between smoking status, including secondhand exposure during childhood and adulthood, and the risk of RA.

To determine the link between smoking status and RA risk, the researchers examined data on 98,995 French women prospectively followed since 1990. Patients responded to self-administered questionnaires every 2 to 3 years, reporting on medical events and general, lifestyle, and environmental characteristics. The researchers collected arthritis diagnoses in 3 successive questionnaires and confirmed whether women received an arthritis-specific medication.

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