Read about a slimming diet that promises to make you lose 5kg in five days? Beware: this is a fad diet.

The human body isn't geared towards losing real weight derived from fat in such a short time. Human metabolism has its own clock and any diet that promises you a loss of more than 0.5 to 1kg in seven days, is habving you on.

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Yes, you may see your weight going down rapidly during those first few days, but if you're just losing water, you'll pick up all those kilos again the minute you stop following the diet.

What's more, one also tends to regain all the weight you've lost in record time and often shoot up to a new high. This type of slimming diet can easily trap you in the snare of "yo-yo dieting", paving the way to perpetual dieting and problems with your metabolism.

Unbalanced food intake
Beware of fad diets that tell you to eat only one category of food, e.g. only protein or only fruit. Fruit and vegetables are packed with antioxidants, vitamins, bioflavonoids, dietary fibre, and protective nutrients, but if you only eat fruit and vegetables to lose weight, you'll be doing yourself harm in the long run.

A two-to-three-day cleansing diet based on fresh, raw fruit and/or vegetables, is perfectly acceptable -provided you don’t try and carry on with this type of diet for weeks on end. If you do, you may lose weight, but will be in danger of developing all kinds of deficiencies. Fruit and vegetables are deficient in many important nutrients such as protein, iron, calcium, vitamin B12, and the essential omega fatty acids.

The same goes for protein-only diets - you simply won't be getting all the nutrients you need.

To remain healthy and lose weight, you need to eat a mix of foods, not just one category. If you hear of a diet that tells you to cut out all protein, all carbohydrate or all fat you should know that it's not balanced and that it can lead to all kinds of problems.

Even a low-fat diet, which is one of the most successful diets for losing weight, still has to contain some healthy fats to provide the essential fatty acids your body requires.

Starvation diets
Very low energy diets are sometimes used to treat people suffering from gross obesity. In general, this type of diet should only be used under the strict supervision of a medical doctor and a clinical dietician.

If you're given a slimming diet which restricts your food intake to a few lettuce leaves and the odd tomato, and you get so hungry that your head spins and you feel faint all the time, then know that this is a fad diet.

You may lose weight on this kind of diet, but you won’t be able to carry on with it for very long. And once you stop, your body will go into overdrive to try to restore its normal balance. Having received the message that the food supply has been cut off, your body will try to conserve energy, slow down weight-loss processes and start storing fat.

Believe it or not, most people lose weight most efficiently when they're not starving, but eating a balanced, low-fat, high-fibre diet which lets them feel comfortably satiated.

- (Dr I.V. van Heerden, DietDoc, updated December 2007)

Any questions? Ask DietDoc
 

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	So true 12/8/2007 1:13:04 PM I have tried all of those diets and I can say from experience that life does go on while you are on diet. If you are starving yourself to loose weight, see how long you can keep that going. it just doesn't work in the long run. Its about a lifestyle change rather than a quick fix, eat the right foods in the right portions and before you know it the weight is off for good. - Samuel   where does excercise fit in? 12/8/2007 8:07:51 PM where does EXCERCISE fit in all of these diet things? no diet works unless coupled with increased excertion(physical excercise) FACT! - Anton   Vitamins/Diets 12/10/2007 8:52:46 AM Thought this might be of some interest from the vitamin lady. - Briggite Venter   diet 12/10/2007 9:04:15 AM IS ONE HELPING OF FRUIT AND VEGETABLE(About a cup each) ENOUGH FOR A DAY IE IN JUST ONE MEAL A DAY. THE OTHER TWO MEALS SAY I TAKE CEREALS ONLY. IS THIS ENOUGH FOR BODY NEEDS - MOTLAPELE TSHOLO   diets 12/10/2007 10:17:09 AM i am 1.5m tall and weigh 55kgs. i am not fat, but only have a bit of a fat tummy. i am trying to eat healthier and smaller portions, but then i am constantly craving for something to nibble on. what do you recommand i eat for those cravings? - alida   what to eat to loose weight 1/24/2008 8:09:04 PM i just had baby 6months ago,am fat .how can i loose weight - mary bolawale   weight loose 4/11/2008 8:23:30 AM my baby she's nine month now i tried all the diet in stores non of those did'nt help me i also joined weigh-less but no different please help me to help my self. - ellen nhlapo   Loose weight 6/8/2008 3:50:18 PM I am a 40 year old male and weighs 105kgs. According to my BMI I am supposed to be 70-75kgs. Please advise on appropriate diet. I am prepared to exercise 30-60 mins a day. I am also healthy. - Vusi Maseko
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