The peptide must survive the acidic cauldron of the stomach, navigate the enzyme-rich small intestine, and then be absorbed through the intestinal wall to enter the portal vein
Talk to your healthcare provider about which Quest tests may be right for you
they observed that the mean enzymatic activities of xenobiotic metabolizing enzymes such as cytochrome P450 1A1 (CYP1A1), aromatase (CYP19A1), and glutathione-S-transferase (GST) were lower in three placental microsomes and subcellular membrane fractions
The brain requires more oxygen and energy to function normally than any other organ in the body
Conditions like pernicious anaemia (an autoimmune condition affecting a protein called intrinsic factor vital for B12 absorption), stomach issues (such as from reduced stomach acid or certain medications like proton pump inhibitors), intestinal disorders (like Crohns disease or coeliac disease), or even surgical removal of parts of the small intestine (e.g., gastric bypass surgery) can prevent proper absorption
