The condition known as cretinism is caused by the deficiency of
Answer Details
The condition known as cretinism is caused by the deficiency of thyroxin. Thyroxin is a hormone produced by the thyroid gland that regulates many of the body's metabolic processes. In infants and children, a deficiency of thyroxin can lead to a condition called cretinism, which is characterized by stunted growth, mental retardation, and other developmental abnormalities.
Thyroxin is important for the development of the brain and nervous system, and a deficiency during early childhood can cause irreversible damage. Cretinism is most commonly caused by a lack of dietary iodine, which is needed by the thyroid gland to produce thyroxin. Without enough iodine, the thyroid gland cannot produce enough thyroxin, leading to the symptoms of cretinism.
The other options listed are not associated with the development of cretinism. Adrenalin is a hormone produced by the adrenal glands that helps the body respond to stress. Vitamin A is important for vision and immune function. Insulin is a hormone produced by the pancreas that regulates blood sugar levels. Vitamin C is important for collagen synthesis and immune function. While these nutrients are important for overall health and development, they do not play a role in the development of cretinism.