4 doctors weighed in:
Why does RA happen?
4 doctors weighed in

2 doctors agree
In brief: Very complex...
Rheumatoid arthritis is a form of autoimmunity, the causes of which are still not completely known.
It is strongly associated with the inherited tissue type major histocompatibility complex (mhc) antigen, hence family history is an important risk factor as well.

In brief: Very complex...
Rheumatoid arthritis is a form of autoimmunity, the causes of which are still not completely known.
It is strongly associated with the inherited tissue type major histocompatibility complex (mhc) antigen, hence family history is an important risk factor as well.
Dr. David Hettinger
Dr. David Hettinger
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Dr. Kathryn Riordan
Internal Medicine - Rheumatology
In brief: Genetics & bad luck
Ra is caused by a combination of genetic predisposition & an environmental trigger. The trigger turns on the immune system and it then turns around and starts to attack the body.
Identical twins have less than a 50% chance of both getting ra. Many events have been thought to trigger ra. Smoking is at the top of the list, it also often starts after pregnancy or around menarche or menopause.

In brief: Genetics & bad luck
Ra is caused by a combination of genetic predisposition & an environmental trigger. The trigger turns on the immune system and it then turns around and starts to attack the body.
Identical twins have less than a 50% chance of both getting ra. Many events have been thought to trigger ra. Smoking is at the top of the list, it also often starts after pregnancy or around menarche or menopause.
Dr. Kathryn Riordan
Dr. Kathryn Riordan
Thank
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