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.
School of Medicine, Family Medicine answered. Caffeine can affect headaches in different ways. For some people, caffeine helps to relieve a stress headache or migraine. It is believed to do this by altering blood flow to the blood vessels in the brain.However, caffeine withdrawal in someone who regularly drinks coffee or energy drinks or uses caffeine pills may also cause headaches.any headache medications contain caffeine, which definitely makes these medications work better. Many patients find having a cup of coffee or other caffeine-containing beverage with their medication helps it work better.