This is erroneous hyperbole
While most people produce sufficient IF, a condition known as atrophic gastritis, affecting 1030 percent of people over 60 years of age, 5 can cause intrinsic factor deficiency, which in turn can cause B12 deficiency due to malabsorption
Researchers should avoid contamination during handling procedures to help maintain solution integrity during repeated laboratory use
The variation in incidence rates of breast cancer between ethnic groups is already well established, including variations between patient subtypes, age of onset, and survival rates for people of both European, African, and Asian descent (93, 94)
Researchers should compare compound name, lot number, COA date, analytical methods, purity data, identity records, label consistency, and storage documentation before procurement