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Vitamin B12 can be difficult for anyone to absorb, but especially for those lacking adequate levels of intrinsic factor, a compound produced naturally in the gut that helps absorb B12. Supplementing with B12 pills can replace deficient levels of B12.
Benefits
Vitamin B12 is essential for absorbing folic acid, creating red blood cells, synthesizing DNA and protecting nerve fibers and the sheath lining the fibers. Vitamin B12 can also increase energy levels, treat pernicious anemia, counter depression and help with asthma and ringing in the ears, according to Ultimate Fat Burner.com, a website that reviews vitamins and supplements. The site claims sublingual supplements of the methylcobalamin variety of B12 are the easiest to absorb.
Dosage
For anyone over age 50, the National Academy of Sciences recommends getting 2.4 micrograms of B12 daily from a combination of nutrition and supplements. All adults need 2.4 mcg, except pregnant and lactating women, who require 2.6 mcg and 2.8mcg, respectively, daily. The dosage for children varies from 0.5mcg to 1.9mcg, depending on age, according to the NIH Office of Dietary Supplements.
Prevention/Solution
Vitamin B12 can strengthen arterial linings by reducing levels of homocysteine. High homocysteine levels can cause arterial weakening and can lead to plaque buildup tearing away from the artery walls to enter the bloodstream.
Expert Insight
A joint study conducted by University of Toronto and York University determined high doses (up to 1,000 mcg per day) of oral B12 is a safe and effective alternative to B12 injections for people with intrinsic factor deficiencies. Participants still absorbed 1 to 2 percent of the B12 ingested to get the recommended daily intake.
Warning
Other than people with intrinsic factor issues, vegans are the most likely to require supplementing with vitamin B12 pills to ensure adequate levels, because animal products contain the highest levels of Vitamin B12.
Source:
Consumer Reports: Conditions & Treatments
Ultimate Fat Burner: Vitamin B12 Information & Benefits
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