Milly Gaines
The zero-calorie diet is a very low-calorie diet (VLCD) of 800 kilocalories (3,300 kJ) or fewer per day. It is designed to aid weight loss and is more effective than behavioural weight loss programs or other diets in the short term. However, VLCDs are not suitable for everyone and are not recommended for long-term use due to safety concerns and the potential for serious side effects such as gallstones. The diet is best undertaken with medical supervision and in conjunction with other obesity therapies. While there are no foods that truly contain zero calories, certain fruits and vegetables are extremely low in calories and can be consumed in large quantities without a measurable impact on weight.
| Characteristics | Values |
|---|---|
| Definition | Very low-calorie diets (VLCDs) are diets of 800 kilocalories (3,300 kJ) or less energy intake per day. |
| Effectiveness | VLCDs are more effective than behavioural weight loss programs or other diets, achieving approximately 4 kilograms (8.8 lb) more weight loss at 1 year and greater sustained weight loss after several years. |
| Safety | The routine use of VLCDs is not recommended due to safety concerns. However, VLCDs can be used under medical supervision for rapid weight loss in obese individuals as part of a "multi-component weight management strategy" for a maximum of 12 weeks. |
| Side Effects | Minor side effects include fatigue, constipation, nausea, and diarrhoea. Gallstones are the most common serious side effect. |
| Nutritional Concerns | Most people on VLCDs need vitamin and mineral supplements to ensure they are getting proper nutrition. |
| Recommended Intake | Adult women likely require between 1,600 and 2,400 calories a day, and men 2,200 and 3,000. |
Explore related products
What You'll Learn
Zero-calorie foods are not technically zero-calorie
While the term "zero-calorie foods" is enticing, it is not technically accurate. Most foods do not truly contain zero calories. Instead, they either contain a negligible amount of calories, are very low in calories, or have calories that are not absorbed by the body. These foods are typically fruits and vegetables, which are packed with nutrients, fibre, and water content, keeping you full and satisfied.
For example, broccoli, a cruciferous vegetable, contains only 34 calories per 3.5 ounces and is an excellent source of fibre, vitamin C, vitamin K, iron, and potassium. Similarly, carrots, known for their carotenoids, provide around 41 calories per two small-to-medium raw carrots. Cauliflower, another popular low-carb substitute, is also very nutritious and low in calories.
Leafy greens such as kale, spinach, and chard are also excellent choices. Kale, in particular, has gained popularity for its impressive nutritional profile, offering high amounts of provitamin A, vitamin C, vitamin K, manganese, and copper. Chard has a similar nutritional profile and provides only 7 calories per cup (36 grams). Spinach, another nutrient-dense option, contains approximately 23 calories per 3.5 ounces.
Other low-calorie options include cucumbers, celery, peppers, and zucchini. These vegetables are mostly water, making them very low in calories. For instance, half a cup of cucumbers (52 grams) has only 15 calories. Radishes, a crunchy root vegetable, are also a good source of potassium, folate, and vitamin C.
While these foods are not truly zero-calorie, they can play a significant role in weight management and overall health. They can help you feel full and satisfied while reducing your calorie intake. However, it is important to remember that simply eating less may not be sustainable, and it is crucial to ensure you are getting enough calories and nutrients to support your body's daily functions.
Make the BRAT Diet Exciting: Creative Tips for Picky Eaters
You may want to see also
Explore related products
Zero-calorie foods are mostly fruits and vegetables
While there are no foods that truly contain zero calories, there are many fruits and vegetables that are very low in calories. These foods have fewer than 40 calories per serving and can help you feel full without contributing to a high-calorie intake.
Leafy greens, such as kale, spinach, chard, and watercress, are excellent examples of low-calorie vegetables. They are packed with essential vitamins and minerals, including vitamins A, C, K, and folate. Broccoli, another cruciferous vegetable, contains only 34 calories per 3.5 ounces and is a good source of fiber, vitamin C, vitamin K, iron, and potassium. Cauliflower, a relative of broccoli, is also very low in calories and has become a popular substitute for higher-carb vegetables or grains.
Fruits like apples, strawberries, papayas, and watermelons are also considered very low-calorie foods. Apples, for instance, provide 62 calories and 3 grams of dietary fiber per cup. Similarly, a small papaya has only 68 calories, while a cup of watermelon balls contains 46 calories. These fruits are also rich in vitamins and antioxidants, making them nutritious choices.
In addition to their low-calorie content, many of these fruits and vegetables are high in fiber, which promotes feelings of satiety and helps you feel full for longer. They also contain essential macro and micronutrients that are vital for overall bodily function, immune health, and digestive health. By including a variety of these low-calorie foods in your diet, you can support optimal health and promote healthy weight loss.
Hard Candy Consumption: Liquid Diet Considerations
You may want to see also
Explore related products
$1.48
Zero-calorie foods can help prevent diseases
While the term "zero-calorie foods" is not technically accurate, these foods are very low in calories and can be extremely beneficial for health. Consuming zero-calorie foods can help prevent diseases and promote overall well-being.
Firstly, zero-calorie foods are often nutrient-dense, meaning they provide a high amount of nutrients relative to their low calorie content. For example, broccoli is a zero-calorie food that is high in vitamin C, folate, vitamin K, potassium, fibre, and iron. Similarly, spinach, a leafy green vegetable, is low in calories yet packed with vitamins K, A, and folate, as well as carotenoids that promote eye health. Chard, another leafy green, is very high in vitamin K and has a minimal amount of calories. These vegetables are excellent sources of essential nutrients, and their low-calorie nature makes them ideal for maintaining a balanced diet.
In addition to their nutritional benefits, zero-calorie foods can aid in weight management. By replacing high-calorie foods with zero-calorie alternatives, individuals can reduce their calorie intake without sacrificing volume or nutrition. This approach can lead to healthy weight loss and improve other aspects of health. For instance, carrots are a zero-calorie food that can help lower the risk of cancer and improve eye health due to their high carotenoid content.
Furthermore, zero-calorie foods are often high in water content and dietary fibre, which contribute to a feeling of fullness and satisfaction. This helps individuals maintain a moderate weight by curbing overeating and snacking. Examples of such foods include watermelon, celery, and cucumbers, which are all hydrating and low in calories.
Lastly, zero-calorie foods can help prevent specific diseases. Research has shown that a diet rich in vegetables from the allium family, such as onions and garlic, can reduce the risk of heart and kidney disease. Similarly, consuming cruciferous vegetables like broccoli may lower the chances of developing certain conditions.
In conclusion, zero-calorie foods offer a wealth of health benefits. Their low-calorie nature, combined with their high nutrient content, makes them ideal for preventing diseases, managing weight, and promoting overall health and well-being. However, it is important to consult a healthcare professional or a registered dietitian to ensure that your diet includes a range of key nutrients and an adequate number of calories for optimal health.
Coca-Cola's First Diet Soft Drink: What Was It?
You may want to see also
Explore related products
Very low-calorie diets (VLCDs) are not for everyone
Very-low-calorie diets (VLCDs) are diets of 800 kilocalories (3,300 kJ) or less energy intake per day. They are also known as semistarvation diets or crash diets. VLCDs are not recommended for the general public due to safety concerns and low evidence of their effectiveness. However, they may be used under medical supervision for rapid weight loss in obese individuals or as part of a pre-bariatric surgery weight management strategy.
VLCDs are not for everyone and should only be undertaken with a prescription and medical supervision. They are not a long-term solution as they are too low in energy and nutrition. Consuming as few as 800 calories daily may not provide enough energy for daily living and regular physical activity, especially if the same foods are eaten every day. It is difficult to get good nutrition and feel satisfied on a very low-calorie diet, and there is a risk of developing nutrient deficiencies.
VLCDs are not normally used for patients with a BMI between 27 and 30 unless they have medical conditions related to their weight, such as diabetes or high blood pressure. They are not usually prescribed for children, teens, or older people due to potential side effects, pre-existing medical conditions, or medication needs.
Side effects of VLCDs can include headaches, weakness, fatigue, nausea, vomiting, constipation, dehydration, low blood sugar, bad breath, diarrhea, dizziness, and hair loss. In addition, VLCDs may increase the risk of developing gallstones if the fat content is not sufficient, and they can lead to a loss of lean muscle mass and electrolyte imbalances.
It is important to consult with a physician or registered dietitian before starting any diet to ensure it is safe and appropriate for your individual needs.
Reduce Kidney Stones: Dietary Changes to Make
You may want to see also
Explore related products
$11.99
VLCDs can be effective for short-term weight loss
A very-low-calorie diet (VLCD) is a type of diet with very or extremely low daily food energy consumption. VLCDs are defined as diets of 800 kilocalories (3,300 kJ) or less per day. They are clinically supervised and can result in significant weight loss (1.5-2.5 kg per week). VLCDs are more effective than behavioural weight-loss programs or other diets, achieving approximately 4 kilograms (8.8 lb) more weight loss at 1 year and greater sustained weight loss after several years.
VLCDs often replace meals with protein-rich shakes, soups, or bars, which can simplify weight loss. However, they may lead to side effects like fatigue, weakness, and muscle loss. Weight regain is common if long-term healthy eating habits are not established after the diet. VLCDs may also increase the risk of developing gallstones if the fat content is not sufficient.
VLCDs are not recommended for individuals in good health due to the risks associated with this type of diet. They are only recommended for someone who is medically obese with a BMI over 30. In addition, VLCDs must be medically supervised as there is a risk of potentially serious side effects, and not all patients are suitable due to pre-existing health issues.
Affordable Atkins: Smart Shopping for Dieting on a Budget
You may want to see also
Frequently asked questions
A zero-calorie diet is a very low-calorie diet (VLCD) of 800 kilocalories (3,300 kJ) or fewer per day.
Zero-calorie foods include fruits and vegetables such as broccoli, cauliflower, pumpkin, and watermelon.
Yes, VLCDs can increase the risk of developing gallstones and may cause other side effects such as fatigue, constipation, nausea, and diarrhea. They should only be undertaken with proper medical supervision.
Very low-calorie diets are not recommended for pregnant or breastfeeding women, children, teens, or people over 50. They may also not be suitable for those who are overweight but not obese (BMI of 27-30) unless they have weight-related medical problems and are under medical supervision.
