Glycine for Nighttime Cortisol Lowering
Chronic high cortisol, common with age, degrades muscle through autophagy and suppresses muscle protein synthesis. An evening dose of glycine addresses the culprit at a time when cortisol should naturally dip. DeLauer emphasizes that managing cortisol is not just about belly fat but about preserving muscle, and glycine is a straightforward, low-side-effect intervention. He also notes that glycine is found in collagen and bone broth, linking it to gut health benefits, but isolated glycine provides a potent direct signal for calming the body.
Glycine acts as an inhibitory neurotransmitter in the central nervous system, producing a calming effect that can dampen the hypothalamic-pituitary-adrenal (HPA) axis activity, thereby reducing cortisol secretion. Additionally, glycine supports the gut mucosal layer, indirectly reducing systemic inflammation that can drive cortisol.
3 g of glycine at night, can actually help lower cortisol levels quite a bit.

