This is possible if the omelette has been cooked using unhealthy fat e.g. if you are eating in a restaurant that has cooked its vegetables using bacon fat. You will also have to consider the eggs size. Small eggs will contain about 54 Calories whereas jumbo eggs will contain about 90 calories.
The kidneys and liver can make hormones that stimulate other organs. When sunlight strikes the skin, the skin makes a chemical that the liver changes into a form of vitamin D. This vitamin D moves from the liver to the kidneys courtesy of the bloodstream. In the kidneys it becomes a hormone called calcitriol.
They are complex organs that are vital for life. The kidneys produce urine which is made up of waste products, excess mineral ions and excess water from the body. The main job of your kidneys is to regulate the amount of water in the body and balance the concentration of mineral ions in the blood. They also get rid of waste products, especially a nitrogen-containing compound called urea.