From Hunger to Hypothyroidism:  Orexin, a neuropeptide produced by the hypothalamus, is often hailed as the “hunger hormone.” But its influence extends far beyond the realm of rumbling stomachs. This tiny molecule, discovered in the late 1990s, plays a critical role in regulating a multitude of physiological processes, from sleep and wakefulness to reward and … Continue reading 10 Hormonal Crossroads Where Orexin Holds the Key