Dante Carrillo
The Cambridge Diet is a very-low-calorie diet that has been characterised as a fad diet due to its starvation-level calorie intake, extreme weight loss goals, and its rapid rise and fall in popularity in the 1980s. The diet has been criticised for being unsustainable and unhealthy, with potential adverse side effects such as bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation. However, there is some evidence that the diet can lead to short-term weight loss and may even help manage Type 2 diabetes. The diet consists of meal replacements in the form of shakes, soups, and bars, with the number of calories consumed gradually increasing over time.
| Characteristics | Values |
|---|---|
| Calorie intake | Initially 330 kcal/day, later 800 kcal/day, and currently 600 kcal/day |
| Duration | 12 weeks |
| Meal replacement | Shakes, soups, and bars |
| Cost | £2.78 per meal replacement |
| Side effects | Bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation |
| Health risks | Cardiac arrest, nutrient deficiencies, headaches |
| Long-term sustainability | Unlikely due to feelings of hunger and cravings |
| Social and mental impact | Negative impact on social life and mental well-being |
| Type of diet | Very low-calorie diet (VLCD) |
| Other names | 1:1 Diet |
| Stages | Six |
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What You'll Learn
The Cambridge Diet is a very low-calorie diet
When the Cambridge Diet was launched in 1980, it specified an intake of just 330 calories per day. In 1985, the Cambridge Diet Plan paid a six-figure sum to settle a case brought by the family of a 31-year-old woman who had died while following the diet. In response to pressure from health authorities, the calorie intake was raised to 800 calories per day. Modern guidelines state that a diet of less than 1000 calories per day should not be followed for more than 12 weeks, and a diet of less than 600 calories per day should be done only under medical supervision.
The Cambridge Diet is based on the idea of creating an extreme calorie deficit, where you burn more calories than you consume. This forces your body into a state of ketosis, where you burn fat for fuel instead of food. While this can lead to quick weight loss, it can also result in nutrient deficiencies and adverse side effects such as bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation. The diet is also likely to be unsustainable in the long term, as low-calorie diets can increase appetite hormones and lead to feelings of hunger and cravings.
The Cambridge Diet has been included in the largest-ever study of diabetes prevention, and there is some research to suggest that very low-calorie diets may help manage Type 2 diabetes. However, it is not safe and effective for everyone, and it is important to consult a healthcare professional before starting any extreme diet. Instead of restrictive diets, a combination of healthy eating, regular exercise, and adequate sleep is generally recommended for those who want to lose weight in a safe and sustainable way.
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It has been criticised for being unsustainable and unhealthy
The Cambridge Diet has been criticised for being unsustainable and unhealthy. It has been described as a fad diet due to its extremely low-calorie intake, extreme weight loss promises, and its rapid rise and fall in popularity in the 1980s. The diet has evolved and is now called the "1:1 Diet", but it still involves a very low-calorie intake, which can be unsafe and lead to adverse side effects.
The Cambridge Diet is a very low-calorie diet, often starting at around 400-600 calories per day for up to 12 weeks, and gradually increasing to 800-1200 calories. This is still considered a starvation-level calorie intake, which can lead to feelings of hunger and cravings, and can be unsustainable in the long term. The diet involves replacing regular meals with shakes, soups, bars, and porridges, which can be incredibly boring and restrictive, negatively impacting a person's relationship with food, social life, and mental well-being.
The extreme calorie deficit can lead to quick weight loss, but it may also result in nutrient deficiencies and other undesirable outcomes such as constipation, headaches, dizziness, bad breath, dry mouth, tiredness, insomnia, and nausea. The diet can be costly, as people must buy at least two weeks' worth of products at a time, and there is little evidence of long-term weight loss success.
Additionally, there have been concerns about the safety of the Cambridge Diet. In the 1980s, there were documented deaths of people following the diet, and the US Food and Drug Administration (FDA) stated that several deaths were "potentially linked" to the diet. Modern guidelines recommend that a diet of less than 1000 calories per day should not be followed for more than 12 weeks, and a diet of less than 600 calories per day should be done only under medical supervision, as very-low-calorie diets can lead to sudden death by cardiac arrest.
While the Cambridge Diet may provide quick results in the short term, it is not a sustainable or healthy approach to weight loss. It is important to consult with a healthcare professional before starting any diet, especially one that involves such extreme calorie restriction.
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The diet has been linked to several deaths
The Cambridge diet has been linked to several deaths. In 1985, Cambridge Diet Plan paid a six-figure sum to settle a case brought by the family of a 31-year-old woman who died while following the diet. The US Food and Drug Administration (FDA) stated that eight such deaths were "potentially linked" to the Cambridge diet, and there were six documented deaths of people following the Cambridge liquid diet in the early 1980s.
The Cambridge diet has been characterised as a "fad diet" due to its extremely low-calorie intake, which is close to starvation levels. When it was launched in 1980, the diet specified an intake of just 330 calories per day, and as recently as 2019, this was increased to 450 calories per day. Modern guidelines state that a diet of less than 1000 calories per day should not be followed for more than 12 weeks, and a diet of less than 600 calories per day should only be undertaken with medical supervision. Very-low-calorie diets can lead to sudden death by cardiac arrest.
The British Dietetic Association lists several possible adverse side effects of the Cambridge diet, including "bad breath, a dry mouth, tiredness, dizziness, insomnia, nausea, and constipation". There are also concerns about the cost of the diet, as people must buy at least two weeks' worth of products at a time.
In addition to the potential health risks, the Cambridge diet has also been criticised for its lack of long-term effectiveness. While it may provide quick results in the short term, it is an extremely restrictive weight-loss plan that is unsustainable and can negatively affect an individual's relationship with food, their social life, and their mental well-being.
The diet has also been the subject of legal controversy. In 1980, the US Postal Service brought a suit against distributors of the Cambridge diet, charging that they had used the mails to exaggerate weight-loss claims and fail to warn of potential health risks. As a result, a federal court in San Francisco issued a restraining order, requiring the distributors to remove some advertising statements and include warnings with their products.
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It includes meal replacement shakes, soups and bars
The Cambridge Diet is a very low-calorie diet that has been characterised as a fad diet due to its starvation-level calorie intake, extreme weight loss, and rapid rise and fall in popularity in the 1980s. The diet has evolved and been renamed the "1:1 diet", which includes personal one-to-one support with a diet consultant to guide you through the different stages.
The diet follows six stages, with total calories gradually increasing from around 500 to 1200 kcal per day before the maintenance stage is reached. The first stage, "Sole Source", involves eating 3-4 Cambridge Diet meal replacements each day, including shakes, soups and bars, totalling 400-600 calories for up to 12 weeks. The remaining stages reintroduce regular meals and remove the 1:1 products in various combinations.
Meal replacement products are provided at a cost, and you continue to see your consultant once a week for a review and to order more meals. You can expect to pay around £2.78 per meal replacement.
While the Cambridge Diet may provide quick results in the short term, there are concerns that it is an extremely restrictive weight-loss plan that is unsustainable long term. The extreme calorie deficit is likely to flatline energy levels and deplete the immune system, as well as negatively affect your relationship with food, your social life and your mental well-being.
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The diet has six stages, gradually increasing calories
The Cambridge Diet, now known as the 1:1 Diet, is a very-low-calorie diet that has been characterised as a fad diet. The diet has six stages, gradually increasing calories from around 500 to 1200 kcal per day. The first stage, 'Sole Source', involves eating 3-4 Cambridge Diet meal replacements each day, totalling 400-600 calories for up to 12 weeks. This is followed by five more stages that reintroduce regular meals and remove the 1:1 products in various combinations. The diet is designed to put the body into ketosis, where it burns fat for fuel instead of food, resulting in substantial weight loss.
Stage 2 of the Cambridge Diet involves consuming two meal replacements, plus protein-rich foods, skimmed milk, and some vegetables, totalling 800 calories a day. This is a significant increase in calories from the first stage and helps to provide more variety in the dieter's meals. The gradual increase in calories allows the body to adjust to the new diet and can help prevent feelings of hunger and cravings.
The remaining four stages of the Cambridge Diet continue to reintroduce regular meals and further increase the calorie intake. These stages are designed to help dieters transition to a more sustainable and balanced diet while still providing structure and guidance. The exact combination of meals and products will vary depending on the individual's needs and progress.
While the Cambridge Diet can lead to quick weight loss, it is important to consider the potential risks and adverse side effects. The diet is very restrictive and may not be sustainable in the long term. It can also be costly, as individuals must purchase Cambridge Diet products and consult with a dietician. Some people may find it challenging to stick to the diet, and there is a risk of gaining weight when reintroducing normal foods. Additionally, very low-calorie diets can lead to nutrient deficiencies and adverse side effects such as constipation, headaches, dry mouth, tiredness, dizziness, insomnia, nausea, and a weakened immune system.
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Frequently asked questions
The Cambridge Diet is a very-low-calorie diet that has been characterized as a fad diet. It involves replacing meals with shakes, soups, and bars. The diet has six stages, with the first stage allowing only 400-600 calories per day. The number of calories increases gradually at each stage until the maintenance stage is reached.
The British Dietetic Association lists the possible adverse side effects as bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation. Very low-calorie diets can also lead to a downregulation of metabolism and subconscious movements, as the body attempts to conserve energy.
The Cambridge Diet can result in quick and substantial weight loss due to the extreme calorie deficit it creates. However, it is important to note that this weight loss may not be sustainable in the long term, and there is a high likelihood of gaining weight when reintroducing normal foods.
The Cambridge Diet is not recommended without the guidance of a health professional due to the very low-calorie intake. Modern guidelines state that a diet of less than 1000 calories per day should not be followed for more than 12 weeks, and a diet of less than 600 calories per day should be done only under medical supervision.
The Cambridge Diet can be expensive as you are required to purchase their meal replacement products. The cost of each meal replacement is around £2.78, and you must buy at least two weeks' worth of products at a time.
