why do you lose calories when donating blood?
In: Biology
Humans, like all other animals are made of food. When you donate blood you give about 500mL of whole blood. Blood is about 40% red blood cells (RBCs) or roughly 200g of RBCs. RBCs are about 50% protein and 40% lipids so 100g protein, 80g lipids. Protein has 4 calories per gram and lipids 9. This adds up to 400cal of protein and 720cal of lipids for a total of 1,120 calories being physically removed from your body.
Platelets and white blood cells will be in there too, along with some glucose and other goodies, but in very small amounts. All the numbers are rough approximations.
Latest Answers