The links between RA and coffee are weak, but some studies have shown that decaffeinated coffee is linked to an increased risk. Tea may actually reduce the risk, while regular coffee has been shown to have no effect at all.
Alcohol also reduces your risk of getting rheumatoid arthritis. People who have at least one alcoholic drink three or more days a week are 4 times less likely to develop RA than non-drinkers. Smoking increases your risk of developing RA, and arthritics who smoke report having more joint pain than those who don't.
There are more activities that increase or decrease your chances of getting rheumatoid arthritis. Find out which ones in this health.com article.