The New York University Langone Medical Center, on the other hand, reports no marked increase in blood sugar levels in diabetics. As a precaution, however, you should discuss fish oil supplements with your health care provider, if you have diabetes. If you're already taking fish oil supplements, keep a close watch on how your blood sugar levels vary.
Another condition that can cause headache above left eye is glaucoma. This condition is due to the build-up of pressure within the left eye that causes damage to the optic nerve, destroying peripheral vision and leading to blindness. Any infections or tumor in the left eye or brain can cause pain around the eye.
Kidney stones in the left side of the abdomen can cause the strongest pain ever felt. It can also cause vomiting as well as a spreading of the pain from the loin to the groin. When there is a buildup of minerals a stone can form down the kidney or in the ureter. The pain may be in the upper left abdomen when the stone is in this area.