Gorilla like man with large heads and protruding jaws, is produced by a over secretion of growth hormone since maturity. This condition is called acromegaly. In this the concerned person may attain a height of 8 feet or more. Over secretion of GH causes gigantism, but in this the long bones do not grow in length due to closed epiphyseal plate at their ends, but bones of hand, feet lower jaw and rib cage thicken. Simultaneously eyelids, lips tongue, nose, chin etc, also enlarge. Consequently the body becomes ugly like a gorilla.