The phrase "absorption vitamin" is not correct and does not convey a clear meaning in written English.
It may be intended to refer to vitamins that aid in absorption, but as it stands, it lacks clarity and context.
Example: "Certain absorption vitamins can enhance the body's ability to utilize nutrients effectively."
Alternatives: "vitamins for absorption" or "absorption-enhancing vitamins".
For example, the migration of human populations from equatorial regions toward northern climates, where they were exposed to relatively low amounts of sunlight, resulted in changes over time in skin pigmentation, with skin becoming lighter in colour to augment vitamin D absorption (vitamin D is critical for proper bone development).
After absorption, vitamin D is bound to the binding protein and carried to the liver via the bloodstream.
Preceding absorption, vitamin E and food lipids form micelles in the presence of bile and bile salts.
Specific gut bacteria have for instance been associated with improvement of digestion, absorption, vitamin synthesis and the inhibition of pathogen growth (Saulnier et al, 2009), which classifies them as mutualistic inhabitants.
Smoking interferes with absorption of vitamins, particularly vitamin C and folic acid.
Finally, a wide variability of absorption of vitamin D2 was reported in vitamin deficient and insufficient CD patients, but vitamin D2 absorption was significantly reduced compared with HC [ 77].
Bile is necessary for the absorption of vitamin K. Similar changes may take place when absorption of vitamin K is impaired by conditions such as chronic diarrhea or with the administration of certain antibiotics.
Absorption of vitamin B12 starts in the stomach, where acidic fluid frees up the vitamin, and a second digestive chemical known as intrinsic factor carries the vitamin to the small intestine, where it is taken up and put to work.
In Alagille syndrome, deficiency of intestinal bile acids ultimately interferes with the absorption of vitamin D, and failure of endochondral ossification is generally associated with the disturbance of absorption of vitamin D. However, the underlying mechanism causing delayed union in Alagille syndrome remains unclear.
Vitamin E uptake in humans is characterized by a large inter-individual difference, and the molecular mechanism behind the absorption of vitamin E remains unresolved.
