People with immune compromise , chronic illness, or malnutrition
Glutathione is an antioxidant made from glycine, glutamic acid, and cysteine
Both is usually the answer they give back
The technique is learnable, but the decisions around it (do you actually need it, what dose, how often, and is something else being missed) are medical judgements, and getting them wrong carries real cost
Foods high in sulphur-containing amino acids (like cysteine) are key: Eggs Lean meats and fish Whey protein Allium vegetables (garlic, onions) Cruciferous veg (broccoli, Brussels sprouts) Some foods contain glutathione itself - particularly avocado, spinach, asparagus, and okra - but cooking and storage rapidly degrade it
This enzyme can prevent the production of free radicals which reduces the risk of damage to the endothelium