ADH secretion can be influenced by drugs, including alcohol. Alcohol reduces ADH secretion, leading to the production of copious volume of urine. Aldosterone water and ion balance. The longer the night, the more melatonin is secreted, the more the activity of the gonads is inhibited. In Finland, twins are most likely to be conceived in July, when days are longest and melatonin levels are lowest.
Prostaglandins are fatty acid-based chemicals that are made in most of the tissues of the body.
They have a diverse range of actions, including inflammation, fever, and development of pain. Many of their actions are associated with control of smooth muscle cells in blood vessels.