Lastly, like the cold bottom of your MacBook, a metal pencil can be cool to the touch and will heat up more slowly than a rubber grip. On the other hand, metal pencils are more expensive and, frankly, heavier, which is not a feature everyone wants. 2. Advance Real aficionados geek out over a pencilâs advance precision. For the layman, advance is how a pencil produces lead. A more precise advance means that lead comes out evenly and with a consistent click.
Vitamin B12 Deficiency and Brain Damage. I found it hard to see how things as seemingly far apart on the importance spectrum as vitamin B12 deficiency and brain damage could be related. To me, Vitamin B12 Deficiency sounded innocuous, while Brain Damage sounded horrifying.So, Iâm not surprised that people are incredulous when I tell them about the risks of low B12, and that in fact vitamin B12 deficiency can cause brain damage. Plus, at first glance it probably doesnât seem like I have brain damage.So, maybe the place to start is a description of my experience with brain damage. found it hard to see how things as seemingly far apart on the importance spectrum as vitamin B12 deficiency and brain damage could be related.
Subacute combined degeneration is caused by vitamin B12 deficiency. It mainly affects the spinal cord. But its effects on the brain and the peripheral (body) nerves are the reason for the term combined.. At first, the nerve covering (myelin sheath) is damaged. Later, the entire nerve cell is affected.