Let’s say you are dying of starvation. You pull one of your teeth out, causing blood to slowly seep into your mouth, which you swallow. The calories from the blood getting digested will delay the time you die of starvation, right? Or will losing blood while starving kill you faster?
I thought you can’t digest more than a little bit of blood because of the amount of iron in it. And you’re likely to start vomiting.
And if you lose too much blood, it’ll kill you much more quickly anyways.
And of course if you lose blood and have to replenish it… That takes a good amount of extra energy to produce all the blood cells etc. And digestion also costs energy.