What are the major hormones and where are they produced in the body?
The major hormones are cortisol, thyroid hormone, insulin, melatonin, growth hormone, adrenaline, testosterone, estrogen, and progesterone. They are produced in the pituitary and pineal glands (located in the brain), in the thyroid (neck), and adrenal (above the kidneys) glands, and in the ovaries and testicles.