Dear Mr Sunil, as i can understand that your wife has been diagnosed to have rheumatoid arthritis
,which has been validated by lab results.
Rheumatoid arthritis is an autoimmune disease
(where the bodies defence mechanism starts attacking its own cells) , which is not curable, but can be very well controlled with newer modalities of treatment.
Latest consensus for treatment among the rheumatologist
is to go for early aggressive treatment to prevent deformities.Newer modalities of treatment include biological agents like Etarnacept which is seen to provide very good results in Rheumatoid arthritis. Although cost is a concern.You can discuss the options with your rheumatologist.
She can take any kind of food she likes,but a general opinion is to avoid fatty food ,and a low sugar diet as long standing rheumatoid arthritis has a potential to cause atherosclerosis
(thickening of blood vessels) which may lead to heart problems.
She has to be in regular follow up with a Physiotherapist to keep her joints mobile and supple.
Regular treatment and physiotherapy
can prevent joint damage and she can lead a good healthy life.
Hope you find my answers useful. Take care.