In healthy people, the pancreas produces the hormone insulin, which signals to cells to take sugar out of the blood after a meal. (sciencedaily.com)
To conserve glucose within the body, the kidneys do not filter glucose out of the blood stream into the urine until an excessive level is reached. (vcahospitals.com)
This leads to a «back - up» of blood in the lungs, which can result in fluid leaking out of blood vessels and accumulating in lung tissue, resulting in cough. (morrisanimalfoundation.org)