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.
Caffeine can both cause and cure headaches. Caffeine actually can be helpful for headaches if it is used at the time of a headache for example, in combination [medicines] like Excedrin or even just as a strong cup of coffee.In this setting, caffeine works in several ways.here have been some case reports of people experiencing headache after drinking caffeine, but in general caffeine does not directly cause headaches. Regular caffeine consumption leads to physical dependence on caffeine, which manifests as withdrawal symptoms when a caffeine user abruptly stops using caffeine.