Increased Energy Levels B12 helps convert food into usable energy
The proper dose of B12 to stay healthy Those who are likely to need B12 shots include people with the aforementioned symptoms as well as those with illnesses like pernicious anemia, atrophic gastritis, infertility, heart palpitations, celiac disease, Crohns disease, pancreatic insufficiency, or AIDS
Vitamins B1 and B2 help the body break down carbohydrates, fats, and proteins, while vitamin B12 promotes proper nervous system function, blood formation, and DNA replication

Scientific Research Scientific research indicates that drinking contributes to vitamin B12 deficiency, that supplementation can help restore levels of this nutrient, and that alcoholic liver injury results in the purging of vitamin B12 from the liver: Moderate drinking among healthy, middle-aged women produced a statistically significant reduction in blood serum levels of vitamin B12 (source) Supplementation in healthy women over 60 with other B-vitamins over 6 months reversed these nutrient deficiencies and decreased levels of homocysteine, a compound associated with cardiovascular disease (source) Alcohol consumption in healthy male volunteers reduces B vitamin concentration and raises levels of inflammatory compounds (source) In severe alcoholics with liver disease, levels of vitamin B12 in the blood increase as the injured liver fails to hold on to stores of this vitamin (source) Falsely high serum levels of this nutrient can be caused by alcoholic liver disease (source) Unfortunately, most research money in the U.S

Adipose tissue derived bacteria are associated with inflammation in obesity and type 2 diabetes (in Eng)
However, its important to talk to a doctor about getting these vitamin injections