Iris (Definition) The iris is a structure within the eye that helps reduce the amount of light that reaches the retina. The iris is known as the colored part of the eye, and can be blue, brown, or any color or combination of colors in between. The iris is the portion of the eye that responds to light stimulation. ...Read more.
Scientists also speculate that caffeine may provide a mood-boosting effect that helps ease pain. Regardless of the mechanism by which it works, the data does indicate that caffeine does indeed make pain medications more effective and help ease pain.
However, with caffeine and pain relief there is definitely a catch 22 situation. Consuming occasional caffeine can be a great pain relief enhancer, BUT using caffeine everyday and then stopping caffeine can actually cause headache and muscle pain. Letâs look at some of the research behind caffeine and itâs pain relieving qualities.