Researchers from the University of Alabama at Birmingham found that drinking even moderate amounts of decaffeinated coffee raises the risk of rheumatoid arthritis (RA) four fold.
Decaf coffee is often substituted for regular caffeine-containing coffee by those who want to cut back on their caffeine intake. Because caffeine has been linked to serious health complications, such as heart dysrhythmia, osteoporosis, increased cholesterol levels, and insulin resistance, caffeine is often an unwanted compound in other-wise desirable foods.
The study showed that decaffeinated tea did not raise the risk for RA. In fact, decaf tea had the opposite effect; decaf tea actually lowered the risk for RA. This finding led researchers to believe that perhaps the organic solvents that remove caffeine from coffee are to blame.