IAN HOOTON / SCIENCE PHOTO LIBRARY IAN HOOTON / SCIENCE PHOTO LIBRARY
Insulin injection. Girl injecting insulin into her thigh to treat the disease diabetes mellitus. Diabetes is a metabolic disorder in which either the production of the hormone insulin, which regulates blood glucose levels, is reduced, or the sensitivity of body tissues to insulin is reduced. This causes unused sugars to accumulate in the blood and urine. Treatment is with a strict diet and daily insulin injections to maintain the correct blood-sugar balance.
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