Vitamin B12 is a known energy booster, and as such many dieticians and physicians are recommending weight loss patients, whether or not they have a vitamin B12 deficiency, include a shot in their diet therapy. The reason for this is most people who diet; tend to complain about losing energy, perhaps because of their limited calorie intake. For many people, these centers can not provide for them anything that they can not provide for themselves. If you have been considering going to one of these centers in order to lose weight, there are a couple of things you should ask yourself before committing the time and money. First off, you have to ask yourself if you would be able to afford to go to one of these centers. Further problems can arise if an individual has a medical condition or worse, has one but does not realize it yet. If this individual requires a certain amount of nutrients every day and goes on the Atkins diet, within a week this person can be in serious need of medical attention. It is very important that a doctor be consulted about possible health conditions before going on any diet. Always bear in mind that you do not want your health to suffer for the sake of losing a few pounds. With that said, rapid weight loss is something that can be accomplished. Do not beat yourself up if you have some weight to lose however. Are you aware that your rate of metabolism has an impact on the weight you are? Oftentimes another site will be linked on the original site and somewhere in the fine print there will be a disclaimer informing you that if you click the link you are agreeing to the terms and fees of the site. Since they have your credit card on file, you'll start to notice an unexplainable and recurring charge until you have it taken care of with either your bank or directly with the sneaky website. Understandably, these are ideal conditions for someone that is trying to lose weight. If you are interested in learning more about this procedure, you should consult your doctor or medical health professional to get their medical opinion. The number one thing to remember is that this procedure is not one that allows you to lost weight all by itself.