Soooooooooo...is a cure for arthritis to be constantly pregnant now?
Egyptian mummies and the remains at Pompeii have been studied by forensic scholars.They've found arthritis in many remains.This doesn't jive with this article's positions.
They still don't know why people get RA. One of the ways they try to study disease is with epidemiological studies where they try to understand risk factors, just like smoking, high blood pressure, diabetes, age, sex and family history are risk factors for coronary artery disease. RA is just one type of arthritis. This is an epidemiological study that says among other things, women will have a lower risk of getting RA the longer that they breastfeed. It doesn't say it will prevent RA, just lower the statistical risk.