The HCG Diet
A 500-calorie diet paired with pregnancy-hormone injections. The hormone does nothing; the starvation is the risk.
Compiled by Nidari Nutrition from the Atlas dataset · pending clinical review by Maryam Shabbir, DN.
This is an Atlas entry — a short reference overview, not one of our long-form diet guides. Educational, not medical advice; personalized and clinically reviewed at your consult.
What is The HCG Diet?
The HCG Diet is a modern, commercial diet from Rome, Italy. Nidari rates it hard to keep up day to day, and rates the weight of peer-reviewed evidence behind its main claims as limited / unproven.
Family: Modern & Commercial · Origin: Rome, Italy · Era: 1954 · Difficulty: Hard · Evidence rating: Limited / unproven
Where does The HCG Diet come from?
In 1954 the British physician A.T.W. Simeons, working in Rome, published a Lancet paper claiming that daily injections of human chorionic gonadotropin combined with a 500-calorie diet would mobilise “abnormal” fat and prevent hunger. Seven decades later the hormone has never been shown to do anything, but the protocol keeps returning through clinics, telehealth sellers and “homeopathic” drops. This entry exists as a warning, not a recommendation.
Originator: Albert T.W. Simeons MD, Salvator Mundi International Hospital, Rome · Region: Rome, Italy · Era: 1954 · Atlas map pin: 41.90° N, 12.50° E
How does The HCG Diet work?
- Roughly 500 calories a day
- Daily HCG injections or drops
- Rigid list of permitted foods, weighed
- Fixed phases with a loading phase first
What do you eat on The HCG Diet?
✓ Eat freely
- Very small portions of lean protein
- A short permitted list of vegetables
- Two servings of fruit and one breadstick
✕ Limit or avoid
- This diet
- Over-the-counter “homeopathic” HCG
- Any clinic that sells it to you
Who is The HCG Diet for?
The goals this pattern is most often used for. In a consult we confirm whether it actually fits your body and life.
Is there good evidence that The HCG Diet works?
Nidari rates the evidence behind The HCG Diet’s primary claims as limited / unproven — that is the current weight of peer-reviewed research for those claims, and nothing more. This one is included for completeness — the evidence does not strongly support its specific claims, and we’ll always tell you so.
The hormone has failed every serious test. Lijesen et al. (Br J Clin Pharmacol, 1995), a criteria-based meta-analysis of 24 trials, concluded there is no scientific evidence that HCG causes weight loss, redistributes fat, or reduces the hunger of calorie restriction. Weight lost is fully explained by eating 500 calories a day, which will cause weight loss with or without an injection.
Is The HCG Diet safe, and who should avoid it?
Do not use this diet. The FDA states that HCG is not approved for weight loss in any form, that any weight lost comes from severe calorie restriction rather than the hormone, and that a 500-calorie intake is dangerous — naming gallstones, electrolyte imbalance and irregular heartbeat. In December 2011 the FDA and FTC jointly warned seven marketers of “homeopathic” HCG products; the FTC later won a $3.2 million judgment against one. Injections carry their own risks including ovarian hyperstimulation and thromboembolism. Absolutely contraindicated in pregnancy, breastfeeding and adolescence.
How does Nidari adapt The HCG Diet?
We include this so you can recognise it and walk away. If a clinic offers you hormone drops and a 500-calorie list, they are selling you starvation with a placebo attached. Ask them for the trial data — there isn’t any.
Book a free 15-minute intro callReady to discuss The HCG Diet?
Fifteen minutes with one of our dietitians. We’ll tell you honestly whether The HCG Diet fits you — or point you to the diet that does. Halal and home-kitchen ready. No pressure.