Unlike a lot of other vitamins which can be absorbed straight into the bloodstream, B12 relies on binding with a protein called intrinsic factor to do this
The Spitzer Space Telescope Mission
You're not trying to navigate a complex map of nerves, major blood vessels, and tendons
Its also believed that free radicals quicken signs of aging, like wrinkly skin
Because it goes directly into the bloodstream, it works much faster and more effectively than oral supplements
Plasma homocysteine levels for the above studies [4648] showed that there was no statistically significant difference between children with autistic disorder and controls which has been replicated by a number of other research groups for children with autistic disorder [59, 60, 82], PDD-NOS and Asperger's syndrome [60] as well as a mixed sample of children with autism spectrum disorders [77]