Study finds PTSD raises RA risk

Women who have experienced traumatic events are more likely to develop rheumatoid arthritis, according to a large US study.

Data from a cohort of 50,000 US nurses without RA at baseline showed their risk of developing the disease over 25 years was 76% higher if they reported four or more symptoms of post-traumatic stress disorder, compared with those who reported no trauma or PTSD symptoms.

The researchers