The release of LH & FSH from the pituitary is stimulated by Gonadotropin Releasing Hormone (GnRH) from the hypothalamus. The hypothalamus is stimulated to produce GnRH when it senses low levels of steroid hormones, such as testosterone and estrogen. (hypothalamus [GnRH] --- > pituitary [LH & FSH]--- > testes [testosterone])
On the other hand, when the brain detects high levels of steroid hormones it suppresses the release of GnRH, LH & FSH, and eventually testosterone production. This is called the negative feedback loop – the normal daily rhythm of hormone production.
Sustain Alpha increases GrRH release by preventing the negative feedback of steroid hormones on the hypothalamus through GABAergic modulation and estrogen blockage*.
In other words, Sustain Alpha offsets the suppression of steroid hormones in the brain, allowing the body to produce more testosterone than it normally would, by up-regulating GnRH and LH & FSH. More testosterone means more strength, confidence and sexual prowess.