from The Century Dictionary.
- noun The presence in the gastric juice of an amount of hydrochloric acid less than normal.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun pathology The presence of an
insufficientamount of hydrochloric acidin the stomach
from Wiktionary, Creative Commons Attribution/Share-Alike License
Lack of stomach acids (a condition called called hypochlorhydria) gets in the way of B12 absorption since most B12 in food is attached to proteins in the food, and stomach acids are necessary to release the B12 from these proteins.