what are causes of unexplained blood loss
No but it causes blood loss as the condition causes internal bleeding
Blood loss can be considerable.
Any large blood loss can cause death.
lack of red cells
Blood loss and you can no longer breathe
When the physican states that the large amount of amount of blood loss is due to the surgery and causing the anemia.
carefully
Just means a large amount
blood loss, injury, internal bleeding, illness
The amount of blood you waste cannot be predicted because it depends on the amount of bite and bite radius. Sharks bites cause massive tissue loss, injury to blood vessels, nerves, or internal organs. Sometimes, massive tissue loss/bleeding causes most deaths. Only doctor can stop bleeding by applying direct pressure, IV fluids and blood products will be needed for major wounds.
Anemia has multiple causes, the most common of which are 1) iron deficiency anemia, and 2) blood loss anemia. There are many, many other causes, as well.