Answering to the question "Does cortisol down regulate adrenaline and noradrenaline?"
Let me try to answer. In our body, there is a pair of glands located above the kidney called adrenal glands. Adrenal glands consist of two main parts. The first one is called the adrenal cortex, while the second one is called the medulla. Cortisol is one type of hormones produced by the adrenal cortex while Epinephrine is a hormone produced by adrenal medula. Cortisol, as well as other adrenal cortex hormones, is primarily regulated by what we know as HPA axis (Hipothalamus-Pituitary-Adrenal axis). Hipothalamus produces hormone called CRH (Corticotropin-Releasing Hormone) which then affect Pituitary to release ACTH (Adrenocorticotropic releasing hormone). ACTH would eventually affect the adrenal cortex. Some of which is increasing the cortisol production by adrenal cortex. Cortisol is known as “stress hormone” in which its level would increase during stress condition. Cortisol itself has several effects in our body. Those are increasing blood pressure (by upregulating beta-1...