Problems with B12 deficiency A lack of B12 in your body affects several nervous system and red blood cell functions, which can lead to things like: Anemia: causes fewer red blood cells to move from your bone marrow Birth problems: increases risk of pregnancy loss and neural tube defects Osteoporosis: leads to poor bone health and fracture risk Macular degeneration: progression of age-related macular degeneration Memory loss: the onset of early-stage dementia is greater The advantages of B12 injections The decision to get a B12 shot instead of a supplement depends on factors such as your level of vitamin deficiency, the presence of symptoms, and how your need changes over time
It is also important for the normal function of blood, cells, and nerves
In people with reduced ALDH2 levels (and thus more acetaldehyde), alcohol is more likely to induce asthma.[ref] One study explains: Impaired ALDH2 activity leads to high peak levels of acetaldehyde and to histamine release. Studies show that inhaling acetaldehyde induces histamine-mediated airway constriction, such as is seen in asthma.[ref] Hangovers and histamine A recent animal study sheds light on the age-old question of what causes hangover symptoms
The injury pattern, not personal preference, determines which one makes clinical sense
Administration methods include intramuscular (IM) and intravenous (IV) injections