
The Cambridge Diet, now rebranded as the 1:1 Diet, is a very low-calorie meal replacement diet. It was developed in the 1960s and launched in the US and UK in the 1980s. The diet has been criticised for its extremely low-calorie intake, with the original version providing only 330 kcal/day. The diet has been linked to several deaths and has faced scrutiny from health regulators. While it promises rapid weight loss, experts have questioned its sustainability and long-term health impacts. With these concerns in mind, is the Cambridge Diet going out of business?
| Characteristics | Values |
|---|---|
| Diet type | Very-low-calorie meal replacement |
| Calorie intake | Initially 330 kcal/day, later raised to 800 kcal/day, and now ranges between 415 and 1500 kcal/day |
| Launch year | 1980 |
| Concerns | Extreme weight loss, starvation-level calorie intake, unsustainable, negative impact on relationship with food, social life, and mental well-being |
| Adverse effects | Bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation |
| Deaths | Six documented deaths in the early 1980s, eight deaths "potentially linked" to the diet by the FDA |
| Current status | Renamed to "The 1:1 Diet" in 2019 |
Explore related products
What You'll Learn
- The Cambridge Diet's US version filed for bankruptcy after several deaths
- The diet is characterised as a fad due to its low-calorie intake
- The diet is unsustainable and can negatively affect your relationship with food and social life
- The diet has been criticised for being too expensive
- The diet has been criticised for its lack of long-term health benefits

The Cambridge Diet's US version filed for bankruptcy after several deaths
The Cambridge Diet was a very-low-calorie meal replacement fad diet developed in the 1960s. The diet was launched with different versions in the US and the UK. The US version was very popular in the 1980s but also stirred up some controversy. The diet was criticised for its extremely low-calorie intake, which was akin to starvation. The original diet specified a total daily intake of 330 kcal, which was later raised to 450 kcal.
The US version of the diet came under scrutiny from regulators and health authorities, including the Food and Drug Administration (FDA), due to potential health concerns. The extremely low-calorie intake of the diet was deemed physiologically unsound by the FDA. The FDA received reports of 138 illnesses and six deaths among Cambridge dieters. The FDA stated that eight such deaths were "potentially linked" to the diet, although it was not possible to establish a direct causal relationship. 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 had died while following the diet.
The Cambridge Diet was also criticised for its lack of focus on educating users about healthy eating habits and its potential to create unrealistic expectations for weight loss. The rapid weight loss achieved through the diet was often followed by weight gain when returning to regular eating habits. Additionally, the diet was considered unsustainable in the long term due to its restrictiveness and potential negative impact on social life and mental well-being.
Amid the negative publicity surrounding the potential dangers of the diet, the Cambridge Plan International, the company behind the Cambridge Diet, filed for bankruptcy protection in 1983. The company cited competition from imitators and sharply dwindling sales as reasons for its financial troubles. The US version of the Cambridge Diet eventually shut down, while the UK version was rebranded and is now known as The 1:1 Diet.
Eating 1200 Calories: What Does a Day Look Like?
You may want to see also
Explore related products
$9.6 $20

The diet is characterised as a fad due to its low-calorie intake
The Cambridge Diet, now rebranded as the 1:1 Diet, is characterised as a fad due to its extremely low-calorie intake. The diet was launched in the 1980s as a very-low-calorie meal replacement plan. It was developed in the 1960s by Dr. Alan Howard at Cambridge University, England, and was initially used in hospital weight loss programs. The diet was commercialised in the US in 1980 and in the UK in 1984.
The Cambridge Diet is a calorie-controlled diet aimed at rapid weight loss. It starts as a 12-week, very low-calorie diet consisting of meal replacements in the form of shakes, soups, bars, and drinks. The first two weeks of the diet consist of three liquid meals a day, with a total calorie intake of around 330 to 600 kcal/day. This is considered a starvation-level calorie intake and is likely to deplete energy levels and negatively impact the immune system.
The extremely low-calorie intake of the Cambridge Diet has raised concerns among health professionals. The British Dietetic Association lists several possible adverse side effects, including "bad breath, a dry mouth, tiredness, dizziness, insomnia, nausea, and constipation". In addition, very-low-calorie diets can lead to sudden death by cardiac arrest. The diet has also been criticised for being unsustainable in the long term, as it is incredibly restrictive and can negatively affect an individual's relationship with food, their social life, and their mental well-being.
Despite the concerns surrounding the Cambridge Diet, it is important to note that it has been included in the largest-ever study of diabetes prevention. Some research suggests that very low-calorie diets may help manage Type 2 diabetes. However, this does not mean that the diet is safe and effective for everyone. As with any diet, it is essential to consult a healthcare professional before making any significant changes to your eating habits.
Blood Type Diet: Risky Business or Healthy Eating?
You may want to see also
Explore related products

The diet is unsustainable and can negatively affect your relationship with food and social life
The Cambridge Diet is a very low-calorie meal replacement diet that was developed in the 1960s. It has been criticised for being unsustainable and extremely restrictive. The diet starts as a 12-week, very low-calorie diet consisting of meal replacements in the form of shakes, soups, and bars. The total daily calorie intake is around 500 to 800 kcal per day, which is close to starvation levels and is likely to deplete energy levels and harm the immune system.
The diet's rapid weight loss can create unrealistic expectations, leading to frustration and disappointment when the weight returns. It does not provide a sustainable eating pattern or teach followers how to create a positive relationship with real food. The extreme calorie deficit can also negatively affect mental well-being and social life.
The diet's strict regime and ultra-processed foods can make it incredibly boring and challenging to stick to in the long term. It can also be expensive, as followers must buy at least two weeks' worth of products at a time. The Cambridge Diet has been linked to several deaths, and health authorities have raised concerns about potential health risks.
In conclusion, the Cambridge Diet's unsustainable nature and potential negative impact on mental health, social life, and physical health make it a potentially harmful choice for weight loss. It is essential to consult a healthcare professional before starting any restrictive diet to ensure it is safe and suitable for your individual needs.
Diet Dr Pepper Calories: Route 44 Edition
You may want to see also
Explore related products
$7.73

The diet has been criticised for being too expensive
The Cambridge Diet has been criticised for being too expensive. The diet plan requires users to buy at least two weeks of products at a time, which can be costly. In addition to the cost of the products, there is also the cost of the diet's "personalised consultant", who works with the dieter to create an individualised plan. This extra support is an additional expense, but has been shown to help increase success rates.
The diet has also been described as unsustainable, due to the monotony of the food and the restrictive nature of the diet. The Cambridge Diet is a very low-calorie meal replacement plan, with the number of calories consumed being close to starvation levels. This can lead to a range of adverse side effects, including bad breath, dry mouth, tiredness, dizziness, insomnia, nausea, and constipation. The diet's rapid weight loss can also create unrealistic expectations, causing frustration and disappointment when the weight returns.
The Cambridge Diet was initially launched in the 1980s with a dangerously low daily calorie count of 330 kcal. In recent years, this has been increased to 600 kcal per day, and can go up to 1500 calories in some steps of the plan. Despite these changes, the diet is still considered to be extremely restrictive and unsustainable in the long term.
The diet has also been associated with 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 had died while following the diet. The US Food and Drug Administration (FDA) stated that eight such deaths were "potentially linked" to the Cambridge Diet. In the early 1980s, there were six documented deaths of people following the Cambridge liquid diet.
The Cambridge Diet, now rebranded as the 1:1 Diet, remains one of the most restrictive diets available. It is characterised by its extremely low daily calorie intake, primarily consisting of ultra-processed shakes, soups, bars, and meals.
Tailoring Diets to Body Types: Finding Your Fit
You may want to see also
Explore related products

The diet has been criticised for its lack of long-term health benefits
The Cambridge Diet has been criticised for its lack of long-term health benefits. The diet is characterised by its very low-calorie intake, which has been described as "starvation-level". When it was first launched, the diet specified an intake of just 330 calories per day, and as recently as 2019, this was raised 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 be done only under medical supervision.
The diet has been associated with several adverse health effects. The British Dietetic Association lists possible side effects, including "bad breath, a dry mouth, tiredness, dizziness, insomnia, nausea and constipation". Other reported side effects include thinning hair, headaches and diarrhoea. The diet's rapid weight loss can also create unrealistic expectations, leading to frustration and disappointment when the weight returns.
The Cambridge Diet has also been criticised for its lack of sustainability. It is considered a fad diet, which is not designed to lead to long-term fat loss. One expert states that the diet doesn't work in the long run because the body will eventually "outsmart calorie restriction" to ensure it doesn't starve. The diet is also criticised for being restrictive, boring, and negatively impacting one's relationship with food, social life and mental well-being.
Additionally, the Cambridge Diet has been scrutinised by regulators and health authorities due to potential health concerns. In 1985, the Cambridge Diet Plan paid a settlement to the family of a woman who died while following the diet. The US Food and Drug Administration (FDA) stated that eight such deaths were "potentially linked" to the diet, and there were six documented deaths of people following the Cambridge liquid diet in the early 1980s.
In conclusion, while the Cambridge Diet may lead to quick weight loss in the short term, there are significant concerns about its lack of long-term health benefits and potential risks to physical and mental health.
Melanin-Rich Diets: Can They Reduce Gray Hair?
You may want to see also











































