Sex
Rheumatoid arthritis incidence is three times higher in females than in males. Research linked the higher incidence of rheumatoid arthritis in female to female hormones because females experience the disappearance of rheumatoid symptoms during the pregnancy and exacerbation of the disease after menopause.
Age
People between the ages group of 30 to 50 years are at high risk of developing rheumatoid arthritis. Rheumatoid arthritis can affect any age group, but it starts at a younger age in females than males.