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.
The kidneys do important work in the body filtering blood, removing waste into urine and balancing electrolyte levels. Our blood in our bodies passes through the kidneys several times a day. The kidneys are a pair of organs located in the back of the abdomen. Each kidney is about 10-12.5cm (4-5in) long - about the size of a fist. Each kidney contains around a million units called nephrons, each of which is a microscopic filter for blood.