The releasing neurons signal to other neurons to trigger the release of stimulating hormones, which triggers the release of the hormone. The releasing hormone is coming from the brain.
The hypothalamus releases the releasing hormone of growth hormones. It is also involved in temperature regulation, which explains the large effect of temperature on growth hormone levels. Heat and therefore sauna can increase the level of growth hormone release. Under high heat, blood vessels dilate, the heart stroke rate increases. Sauna for 20-30... See more
Growth hormone releasing hormone comes from the brain and signals to the pituitary to release growth hormone, which signals to the cells in tissues to increase metabolism. Too high levels cause growth in all tissues, I.e. in the Heart, lungs,… It is released in the early part of slow wave sleep, when you have low levels of glucose. Delta waves trig... See more
Arginine can increase the levels of growth hormone under low glucose levels. It also increases the dilation of blood vessels and with that blood flow. L-Citrulline is a precourser of arginine and has a larger effect on arginine levels.
When the levels of a hormone are too high, the brain will stop to produce stimulating hormones to stop the Production. It can be supplemented through Kelp and seaweed.
The stimulating hormone often comes from the pituitary, which especially triggers the release of stimulating thyroid. Both of these trigger the thyroid to tigger T3 and T4.