The energy yield from a gram of fatty acids is approximately 9 kcal,
compared to 4 kcal/g for proteins and carbohydrates.
PGD2, an eicosanoid derived from essential fatty acids, promotes sleep.
Mg2+ is an important mineral as it is a cofactor in several steps in glycolysis.
Glutathione (an antioxidant with a TV ad) if taken orally is not well absorbed across the GI tract.
However, glutathione concentrations can be raised by increased intake of the precursor cysteine.
Foods rich in cysteine are:
Animal sources: eggs, milk, whey protein, cottage cheese, yogurt, pork, sausage meat, chicken, turkey, duck.
Vegetarian sources: red peppers, garlic, onions, broccoli, oats, granola, wheat germ.