This animated clip explains that some children stay smaller than average because their bodies don’t produce enough growth hormone. If the doctor can’t actually see any reason for this, tests have to be carried out in the hospital. And if your body isn’t producing any growth hormone itself, you have to have an injection in your thigh, tummy or buttock every evening. As a result, you will grow and get to be just as tall as all your friends.
The pituitary gland produces the hormones that pass instructions on to many of the body’s major organs such as the liver, the sex organs, the kidneys, the adrenal glands and the thyroid. The pituitary sends a signal hormone out to the organ to get it working. If the adrenal glands work too hard, less signal hormone is sent out; if they work too slowly, more signal hormone is produced and exactly the same happens with other organs and glands too. The pituitary gland monitors, activates and suppresses the liver, the sex organs, the kidneys, the adrenal glands and the thyroid.