
The HCG diet, introduced in 1954 by British doctor Albert T. W. Simeons, involves taking small, regular doses of Human Chorionic Gonadotropin (HCG) while consuming a very low-calorie diet of around 500 to 800 calories per day. HCG is a hormone typically produced in large quantities during pregnancy, and Simeons discovered that injecting young boys with Fröhlich syndrome—a rare hormonal disorder causing obesity—with HCG helped them lose weight. While the HCG diet has surged in popularity, with various plans and products available, it is not without controversy. The FDA warns against its use due to a lack of evidence supporting its effectiveness and potential health risks associated with restrictive diets.
HCG Diet Characteristics and Values
| Characteristics | Values |
|---|---|
| Calorie Intake | 500-800 calories per day |
| HCG Intake | Small, regular doses through injections, tablets, or other forms |
| Diet Duration | 23-day or 40-day plan, followed by a 3-week maintenance phase |
| Weight Loss | Up to 15 lbs for the 23-day plan and up to 35 lbs for the 40-day plan |
| Additional Support | B12 shots during weekly weigh-ins |
| Food and Drink | Unlimited water, coffee, tea, up to 1 tablespoon of milk per day, sugar substitutes allowed |
| Restrictions | No butter or oils, no sugar |
| Safety | Not approved by the FDA for weight loss, the FDA warns against its use |
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What You'll Learn
- The hCG diet involves a very low-calorie diet, typically 500 to 800 calories per day
- hCG is taken through injections, tablets, or drops during the weight loss phase
- The diet is not FDA-approved and the FDA warns against its use
- The diet was introduced by British doctor Albert T. W. Simeons in 1954
- The hCG diet has a maintenance phase where you stop taking hCG and eat a balanced diet

The hCG diet involves a very low-calorie diet, typically 500 to 800 calories per day
The hCG diet is an approach to weight loss that was introduced by British doctor Albert T. W. Simeons in 1954. It involves a very low-calorie diet, typically restricting intake to 500 to 800 calories per day. This is combined with small, regular doses of hCG, either through injections or sublingual drops. The diet claims to help people lose weight quickly, specifically targeting fat loss in areas like the buttocks and thighs.
The hCG diet typically consists of two phases: the weight loss phase and the maintenance phase. During the weight loss phase, individuals adhere to a strict low-calorie diet, usually limited to 500 to 800 calories per day. This phase also involves taking hCG through injections or other forms, such as tablets or drops. The recommended frequency of hCG administration may vary, but it is often suggested to be daily or twice a day. The weight loss phase typically lasts for a short duration, such as three to six weeks.
The maintenance phase follows the initial weight loss period. During this phase, individuals stop taking hCG and transition to a well-balanced diet while incorporating exercise. The focus shifts from rapid weight loss to maintaining the achieved weight loss results over the long term. This phase emphasizes sticking to healthier eating habits and making sustainable lifestyle changes.
The hCG diet has gained attention due to its promise of quick weight loss results. However, it is important to note that this diet is controversial and has been the subject of various studies and analyses. While proponents claim that hCG boosts metabolism, reduces hunger, and promotes fat loss, there is limited scientific evidence to support these assertions. Some studies have even found that placebo injections worked just as effectively as hCG injections for weight loss, indicating that the hormone may not offer any advantage over simply restricting calories.
Furthermore, the extremely low-calorie intake recommended in the hCG diet can be challenging and potentially dangerous. Consuming as few as 500 calories per day can make it difficult to meet essential nutritional needs, and individuals may struggle to obtain adequate vitamins and minerals without additional supplementation. As a result, it is always advisable to consult with a healthcare professional before embarking on any restrictive diet or weight loss programme.
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hCG is taken through injections, tablets, or drops during the weight loss phase
Human chorionic gonadotropin (hCG) is a hormone that is naturally produced in large quantities during pregnancy. The hCG diet was introduced by British doctor Albert T. W. Simeons in a 1954 medical journal article. He found that injecting young boys with Fröhlich syndrome—a rare hormonal disorder that causes obesity—with hCG taken from the urine of pregnant women helped them lose weight.
During the weight loss phase, hCG is taken through injections, tablets, or drops. The diet plan typically lasts 23 or 40 days, with daily injections or twice-daily drops. The injections are considered superior to the drops as they are virtually pain-free and easy to self-administer. The weight loss phase is preceded by a two-day loading phase, during which patients eat high-calorie, high-fat foods to boost metabolism and prepare the body for weight loss. This is followed by a three-week maintenance phase, during which hCG intake is stopped, and patients transition to a well-balanced diet and exercise routine.
The hCG diet is typically paired with a very low-calorie diet, restricting intake to 500 to 800 calories per day. It is claimed that this combination can boost metabolism, reduce hunger, and promote rapid weight loss, especially in areas like the belly, hips, and thighs. However, it is important to note that the hCG diet is not approved for weight loss and there is no evidence supporting its effectiveness. The U.S. FDA warns against its use due to the potential health risks associated with very restrictive diets.
Despite the lack of evidence and official approval, some weight loss products containing a lab-made version of hCG can be purchased online, in stores, and at weight-loss clinics. These include lozenges, drops, and sprays, which are often marketed with unproven claims about their weight loss benefits.
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The diet is not FDA-approved and the FDA warns against its use
The hCG diet, introduced in 1954, involves taking human chorionic gonadotropin (hCG) alongside a very low-calorie diet. Typically, this involves eating 500 to 800 calories a day and taking hCG in the form of injections, tablets, or other forms. However, the diet is not FDA-approved, and the FDA warns against its use.
The FDA has not evaluated hCG products for weight loss for safety or effectiveness. The FDA warns that very restrictive diets, such as the hCG diet, are dangerous. Living on 500 calories a day is not only unhealthy but also dangerous, and can lead to an increased risk of side effects such as gallstone formation, an imbalance of electrolytes, and an irregular heartbeat. Furthermore, people on such restrictive diets may not be getting enough vitamins, minerals, and protein without careful medical supervision.
The American Society of Bariatric Physicians also recommends against using the hCG diet for weight loss due to a lack of evidence. Research has found that placebo or fake injections worked just as well as hCG injections for treating obesity. There is no evidence that the hCG diet helps reduce hunger, promote weight loss, or trim fat from specific areas of the body.
The FDA advises consumers who are using homeopathic hCG for weight loss to stop using the product and to stop following any labeled dieting instructions. Instead, it is recommended to talk to a healthcare professional about a safe and healthy weight loss plan.
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The diet was introduced by British doctor Albert T. W. Simeons in 1954
The hCG diet was introduced by British doctor Albert T. W. Simeons in 1954. Simeons was born in London and studied medicine at the University of Heidelberg. He specialised in tropical medicine and moved to Hamburg to further his studies in this field. While in India, he observed that undernourished women were still giving birth to healthy babies. He found that, although the mothers might have been underweight, their bodies were producing large amounts of human chorionic gonadotropin (hCG). This hormone, typically produced in large amounts by the placenta during pregnancy, was breaking down the mothers' fat reserves and supplying them to the child.
Simeons's observations in India prompted him to research weight management in more detail. He continued this research until 1949, when he moved to Rome, Italy. In 1954, he published a book called "Pounds and Inches: A New Approach to Obesity", detailing his theories. He also published a paper in the Lancet the same year. Simeons's diet claims to promote rapid weight loss by combining daily hCG injections with a very low-calorie diet of 500 to 800 calories per day. The diet is said to reduce hunger and promote fat loss in areas like the buttocks and thighs.
Simeons first discovered the potential of hCG for weight loss while treating young boys with Fröhlich syndrome, a rare hormonal disorder that causes obesity. He found that injecting these boys with hCG taken from the urine of pregnant women helped them lose weight. However, scientific consensus does not support Simeons's claims regarding the effectiveness of hCG for weight loss. The American Society of Bariatric Physicians and the U.S. FDA warn against the use of hCG for this purpose, stating that very restrictive diets such as the hCG diet can be dangerous.
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The hCG diet has a maintenance phase where you stop taking hCG and eat a balanced diet
The hCG diet involves taking small, regular doses of the hormone Human Chorionic Gonadotropin (hCG) while consuming a very low-calorie diet of around 500 to 800 calories per day. This diet is based on the research of Dr. Albert T. W. Simeons, who found that injecting young boys with Fröhlich syndrome—a rare hormonal disorder that causes obesity—with hCG taken from the urine of pregnant women helped them lose weight.
However, it is important to note that the hCG diet is not without risks and has been the subject of controversy. The U.S. FDA warns against its use, stating that very restrictive diets like the hCG diet are dangerous. Additionally, there is no evidence that the hCG diet helps reduce hunger, promote weight loss, or trim fat from specific areas of the body.
Despite the lack of evidence and potential risks, some people still choose to follow the hCG diet. The diet typically consists of two phases: the weight loss phase and the maintenance phase. During the weight loss phase, individuals follow a very low-calorie diet and take hCG through injections, tablets, or other forms. This phase usually lasts three to six weeks, and individuals can expect to lose up to 15 pounds on a 23-day plan or up to 35 pounds on a 40-day plan.
Following the weight loss phase, individuals enter the maintenance phase, where they stop taking hCG and transition to a balanced and nutritious diet. This phase focuses on maintaining long-term weight loss by sticking to healthy eating habits. It is recommended to work with a dietician or nutritionist during this phase to ensure a safe and sustainable approach to maintaining a balanced diet and a healthy weight.
During the maintenance phase, individuals can expect to eat a variety of whole foods, including lean proteins, complex carbohydrates, healthy fats, and a plethora of fruits and vegetables. A typical day might include oatmeal with fruit for breakfast, a salad with chicken and avocado for lunch, a yogurt snack, and a dinner of fish with quinoa and steamed vegetables. It is important to listen to your body and adjust portion sizes to maintain energy levels and a healthy weight.
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Frequently asked questions
A normal dose for an hCG diet is between 500 and 800 calories per day. The diet also includes daily hCG injections or sublingual drops taken twice per day.
The amount of weight lost on the hCG diet varies depending on the individual and how closely the diet is followed. On average, daily weight loss can be between 1/2 and 1 lb. per day.
The hCG diet is not approved by the FDA, which warns against its use due to the very low-calorie restriction. It may be dangerous and cause more harm than benefit.


























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