DAVID HAY JONES / SCIENCE PHOTO LIBRARY DAVID HAY JONES / SCIENCE PHOTO LIBRARY
Blood sugar testing. Diabetic boy wearing a tae kwan do (a type of martial art) kit and using a glucometer to test his blood sugar (glucose) levels. Diabetes is a disorder where blood sugar is not metabolised due to a lack of the hormone insulin. When controlled using insulin injections, diabetes does not affect a person's ability to participate in active sports.
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