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Some people claim that one can lose weight by using vitamin B12 injections, which boost their metabolism and increase energy levels, thus helping them to burn more calories. Even Margaret Thatcher, Britain's "Iron Lady," is believed to have been receiving vitamin B12 injections to boost her energy levels. Aside from this, some weight loss clinics also offer vitamin B12 lipotropic injections, which combine the vitamin with other vitamins, minerals, and amino acids, and are believed to get rid of excess fat.

There are eight B vitamins that help the body convert carbohydrates into energy. These water soluble vitamins are often called B complex vitamins, also help your body use protein and fats to maintain healthy skin, eyes, hair and liver. They help the nervous system function optimally and help prevent heart disease by controlling blood levels of homocysteine, an amino acid linked to this condition. Vitamin B12 in particular, is important for maintaining nerve cell function and in the production of genetic materials (DNA and RNA).

A person who eats a healthy, balanced diet that includes meat, fish, eggs and dairy products is most likely getting enough B vitamins, including vitamin B12.

However, certain people are at risk for vitamin B12 deficiency and these include elderly individuals, vegans, vegetarians, those with eating disorders, patients who have problems with absorbing nutrients from their gastrointestinal tracts, and HIV patients. Doctors may prescribe vitamin B12 treatments for patients who are suffering from severe deficiency such as pernicious anemia, but for other conditions such as chronic fatigue and heart disease, experts may prefer a healthy diet and supplements instead of injections.

Do Vitamin B12 Shots Make You Lose Extra Pounds?

There is no evidence that vitamin B12 injections make you lose weight due to increased energy levels or metabolism.

Furthermore, when you receive a shot, you probably eliminate the water soluble vitamins in the urine within hours. If you are on a weight loss program that includes a low calorie, low carbohydrate diet and regular exercise, you may get a boost of energy from vitamin B injections, but you are probably losing weight because of the healthy lifestyle you are adopting. Vegans and vegetarians who do not get enough B vitamins may also benefit from taking multivitamins or B vitamin shots and may lose excess weight from a low calorie diet. However, one does not need to get expensive vitamin B12 shots to lose weight from a boost in metabolism.

If you want a boost in energy to help you lose weight, simply eat a balanced diet that includes a variety of low calorie, nutrient dense, foods. Fruits and vegetables, whole grains, fish, low fat dairy products and lean meat contain a lot of vitamins and minerals, and if taken in appropriate amounts, can supply you the recommended daily requirements. However, if you feel you are not getting enough nutrients from your daily diet, you may ask your doctor to recommend the right dietary supplements you may need to fulfill your energy requirements.

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