Madeleine Hull
The Cambridge Diet is a very-low-calorie meal replacement diet developed in the 1960s by Dr Alan Howard at Cambridge University. The diet has been characterised as a fad diet due to its restrictive nature and rapid weight loss results. It has been criticised for being unsustainable and potentially unsafe. The diet starts with a 12-week, 800-calorie phase, consisting of meal replacements in the form of shakes, soups, and bars. With so many flavours to choose from, what do these shakes actually taste like?
| Characteristics | Values |
|---|---|
| Taste | Sweet and savoury flavours |
| Examples | Shakes, soups, porridge, pasta dishes, smoothies, chocolate and yoghurt-coated meal bars |
| Number of products | 35 |
| Calories | 200 or less per product |
| Diet duration | 12 weeks |
| Calorie intake | 800 kcal/day |
| Concerns | Extremely restrictive, unsustainable long-term, risk of nutrient deficiencies, constipation, headaches, dizziness, cardiac arrest |
| Side effects | Bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, constipation |
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What You'll Learn
Flavour improvements
The Cambridge Diet is a very-low-calorie meal replacement diet developed in the 1960s by Dr Alan Howard at Cambridge University, England. It has been characterised as a "fad diet" due to its strict regime and starvation-level calorie intake. The diet consists of meal replacements in the form of shakes, soups, and bars, with all products claimed to be nutritionally balanced and 200 calories or less.
- Experiment with different flavours: The Cambridge Diet offers a range of sweet and savoury flavours for their shakes, including chocolate, vanilla, strawberry, and banana. You can also mix and match different flavours to create your own unique blend.
- Add-ins: Consider adding ingredients such as peanut butter, avocado, or Greek yoghurt to enhance the flavour and creaminess of the shake. Just be mindful that any additions will increase the calorie count.
- Temperature: Try drinking your shake ice-cold or slightly warmed up, as temperature can affect the perception of taste. Some flavours may be more appealing when chilled, while others might be preferable when warmed up.
- Texture: If you're not a fan of the shake's texture, try adding ice cubes or blending in frozen fruit to make it thicker and more smoothie-like. Alternatively, you could add a small amount of water or milk to make it thinner.
- Sweeteners: If you have a sweet tooth, consider adding natural sweeteners such as honey, stevia, or monk fruit extract. These can help make the shakes more palatable without significantly increasing the calorie count.
- Herbs and spices: For a more savoury shake, experiment with adding herbs and spices like cinnamon, nutmeg, or ginger. These can add a depth of flavour and make the shake more satisfying.
- Flavour extracts: You can also find sugar-free flavour extracts, such as orange, lemon, or mint, which can be added to enhance the taste of your shake without adding calories or sweetness.
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Nutritional value
The Cambridge Diet is a very-low-calorie meal replacement diet developed in the 1960s by Dr Alan Howard at Cambridge University, England. It was initially used in hospital weight loss programs and is intended for people with clinically severe or "morbid" obesity, characterised by a body mass index (BMI) of 40 or higher. The diet has six staggered "steps", with the first step involving exclusively consuming pre-packaged branded products in the form of shakes, soups, and bars. These products are claimed to be nutritionally balanced and contain 200 calories or less.
The nutritional value of the Cambridge Diet shakes specifically is not readily available. However, given that the diet is designed to provide a minimum benchmark of vitamins and minerals, it can be assumed that the shakes contribute to this daily nutritional requirement.
The diet kicks off with a strict 12-week, 800-calorie phase, which can lead to quick weight loss. However, this extreme calorie deficit can also result in negative side effects such as nutrient deficiencies, constipation, headaches, and dizziness. The low-calorie intake can also make it challenging to maintain muscle strength and fuel intense workouts, potentially impacting overall energy levels.
While the Cambridge Diet may provide short-term weight loss, there are concerns about its long-term effectiveness and safety. It is considered a ""fad diet"" due to its restrictive nature, rapid rise and fall in popularity in the 1980s, and the potential for adverse side effects. The British Dietetic Association has listed possible adverse effects, including "bad breath, a dry mouth, tiredness, dizziness, insomnia, nausea, and constipation". Additionally, there have been documented deaths linked to the diet, with the US Food and Drug Administration stating that eight deaths were "potentially linked" to the Cambridge Diet.
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Safety concerns
The Cambridge Diet has been characterised as a "'fad diet'" due to its extremely restrictive nature and the potential risks associated with it. The diet was developed in the 1960s as a hospital weight-loss programme for people with clinically severe or "morbid" obesity, but it has since been marketed to a wider population. It is important to note that fad diets are generally not recommended by health professionals and can often be unsafe.
One of the main safety concerns with the Cambridge Diet is the very low-calorie intake, which is close to starvation levels. The diet initially specified an intake of just 330 kcal/day, and even in more recent years, this was still as low as 450 kcal/day. Modern guidelines state that a diet of less than 1000 kcal/day should not be followed for more than 12 weeks, and a diet of less than 600 kcal/day should only be undertaken with medical supervision. The extreme calorie deficit can lead to rapid weight loss, but it can also have negative side effects, including nutrient deficiencies, constipation, headaches, dizziness, low energy levels, and a weakened immune system. There is also a high risk of regaining the weight once a normal eating pattern is resumed.
Additionally, the diet's restriction of carbohydrates can make intense exercise difficult and lead to a loss of muscle strength. While the Cambridge Diet claims to be nutritionally complete, there are concerns about the conservation of lean tissue during the diet. The British Dietetic Association lists several potential adverse side effects of very low-calorie diets, including bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation.
The safety of the Cambridge Diet has been further called into question by reports of deaths linked to the diet. In the early 1980s, there were six documented deaths of people following the Cambridge liquid diet, and the US Food and Drug Administration stated that eight deaths were "potentially linked" to the diet. 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.
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Side effects
The Cambridge Diet, also known as the Cambridge Weight Plan and rebranded as the 1:1 Diet, is a very-low-calorie meal replacement plan. It was developed in the 1960s/1970s at Cambridge University and consists of consuming shakes, soups, bars, and meals sold as part of the diet.
The diet is meant to help people lose weight fast, but it has been criticised for being a "fad diet" due to its starvation-level calorie intake, extreme weight loss, and rapid rise and fall in popularity in the 1980s. The British Dietetic Association lists several possible side effects, including:
- Bad breath and dry mouth: This is often made worse by not drinking enough fluids. It is believed to be caused by the body releasing toxins during ketosis.
- Headaches: These can be caused by the sudden reduction or removal of sugar, caffeine, carbohydrates, and alcohol from your diet.
- Constipation: Adding Cambridge Fibre to your shakes from day one may help avoid this.
- Gallstones: According to Diet.com, severe dieting where weight is lost at a rapid rate increases the risk of gallstones.
- Ketosis: Ketosis is a common side effect of low-carbohydrate diets. If continued for an extended period, it can result in serious damage to the kidneys and liver.
- Fatigue and dizziness: Very-low-calorie diets can lead to fatigue and dizziness due to inadequate nutrition.
- Hair loss and muscle loss: These can also be side effects of inadequate nutrition.
- Digestive distress: This is common with meal replacement shakes, with 1 in 5 people experiencing bloating, constipation, diarrhoea, gas, nausea, or stomach pain.
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Cost
The Cambridge Diet, now known as the 1:1 Diet, is a very low-calorie meal replacement plan. It involves a strict regime of shakes, soups, bars, smoothies, snacks, and meals. 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 cost of the Cambridge Diet can vary depending on the consultant and the specific products chosen. On average, a meal replacement costs around £2.78/€3.32. This price can be more cost-effective when purchasing bundles or larger quantities. For example, a 2-week bundle including 56 meal replacements was offered at a discounted price of £77.70.
It is important to note that the Cambridge Diet requires a minimum purchase of two weeks' worth of products at a time, which can be a significant financial commitment. Additionally, there may be costs associated with the personalised consultant, who provides ongoing support and guidance throughout the diet plan. The consultant typically meets with the dieter once a week to review progress and order more meals.
While the Cambridge Diet may offer weight loss results, it is essential to consider the potential risks and costs involved. The diet is very restrictive, with calorie intake close to starvation levels, which can lead to undesirable side effects such as nutrient deficiencies, constipation, headaches, and dizziness. The high cost of the diet and the potential need for ongoing purchases can also be a significant financial burden.
Overall, while the Cambridge Diet may offer a weight loss solution, it is important to carefully consider the potential costs, both financial and related to one's health and well-being. It is always advisable to consult with a healthcare professional before starting any restrictive diet plan.
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Frequently asked questions
The Cambridge Diet shakes are designed to be tasty and to fulfil your daily nutritional requirements. They come in a variety of sweet and savoury flavours, including chocolate and yogurt. The diet was developed in the 1960s and has since been improved for flavour.
The Cambridge Diet is a very-low-calorie meal replacement diet. It was initially used and developed in hospital weight loss programs in the 1960s. The diet has been characterised as a fad diet due to its extreme weight loss and rapid rise and fall in popularity in the 1980s.
The diet works by significantly cutting calories. It starts as a 12-week, 800-calorie phase made up of shakes, soups and bars. While it may provide quick results in the short term, there are concerns about its safety and sustainability in the long term.
