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Very Low Calorie Diets

Discussion in 'Dietetics' started by Egyptian Doctor, Sep 7, 2012.

  1. Egyptian Doctor

    Egyptian Doctor Moderator Verified Doctor

    Mar 21, 2011
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    Achieving a healthy weight is all about striking the right balance between the energy that you put into your body, and the energy that you use.

    To lose weight, you have to use more energy than you consume in food and drinks throughout the day.

    You can do this by making healthy changes to your eating habits, and building more physical activity into your daily life. In many cases, this will be enough to achieve a healthy weight.

    You can learn more about changing your diet in healthy eating , and get advice on becoming more active in fitness.

    But if you have made these changes already and the weight loss you’ve experienced has not resulted in a healthy weight, you may benefit from a very low calorie diet.

    VLCDs are not available on prescription from the NHS, but are offered by a range of private organisations in England.

    Before you begin a very low calorie diet, make sure that it is the right choice for you. It’s also important that the diet you choose is safe, and that you follow it properly. That means talking to your GP for more advice.

    What is a VLCD?

    A very low calorie diet is any diet that involves eating 1,000 calories per day or less. It should only be undertaken for 12 continuous weeks, or intermittently ”“ for example, every two or three days ”“ along with a low calorie or normal diet.

    The recommended daily calorie intake is 2,000 for women, and 2,500 for men. This means that VLCDs contain far fewer calories than most people need to maintain a stable, healthy weight. For that reason, eating a very low calorie diet can cause more rapid weight loss than a conventional weight loss programme.

    It’s important that VLCDs are only used by people who need them and that the VLCD is safe and followed properly. Cutting calories significantly can cause health problems such as nutritional deficits, gallstones and heart problems. A proper VLCD will ensure that you continue to get all the nutrients you need, and is typically followed under supervision, so that action can be taken if health problems occur.

    In England, a range of private organisations offer very low calorie diet plans. During a typical VLCD the person undertaking the diet will stop eating all normal foods, and replace them with special drinks, soups, bars or porridge. The replacement foods are designed to contain all the nutrients that we need, while providing 1,000 calories a day or fewer.

    The person undertaking the diet will also meet regularly with a trained member of staff from the organisation ”“ usually called a counsellor or consultant ”“ who will monitor their progress.

    Who should use a VLCD?

    VLCDs are suitable only for people who are very overweight, and have remained very overweight despite making healthy changes to their diet and lifestyle.

    Most people who want to lose weight do not need to eat a very low calorie diet.

    But it may be right for you if all three of these statements apply to you:

    • You have already made healthy changes to your diet and level of physical activity.
    • You are still very overweight (your BMI is 30 or over).
    • You are no longer losing weight.
    VLCDs are not recommended for pregnant or breastfeeding women, and they are not suitable for children.

    How to use a VLCD

    If you think a VLCD diet may be right for you, the first step is to talk to your GP. Your GP can provide advice on whether a VLCD will help: they may measure your BMI, and talk to you about other steps you’ve taken to lose weight. VLCDs are not suitable for people with certain health conditions, and your GP can also talk to you about this.

    If your GP agrees that a VLCD is a good idea, the next step is to find a good provider of a VLCD. Your GP may be able to help with this, too.

    At your first session, a counsellor from the VLCD organisation will talk to you about how the diet works, the weight loss you can expect, and side effects that may occur while you are on the diet. These are usually minor, and can include fatigue, diarrhoea, constipation and nausea.

    Typically, you’ll be asked to keep a record of your weight loss, and any side effects.

    Your counsellor will refer you to a GP if you encounter any health problems during the diet.




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    Last edited: Sep 7, 2012

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