Describe the effects of Testosterone, Estrogen and Progesterone. Have sex hormones been used to improve Athletic Performance? Why have they been used?

What is the importance of insulin in the human body? Where is it produced? What is the result of too little insulin in the body?

Erythropoietin is being used for patients with Cancer and Kidney Failure patients. What is this substance? How is it utilized in the body?

What are adrenocortical steroids? What are their effects on the body?

What is the hormone produced by the Thyroid Gland? What are its effects?