Read this before continuing: https://icaro.med.br/hcg-aspectos-basicos-necessario/
FIRST STEP - To put it simply: the term “HCG diet” refers to the process of losing weight through the use of a restrictive, low-calorie diet associated with the hormone HCG. The diet in question should, as far as possible, be proportionally richer in protein and fiber, but without fats of any kind and with maximum restriction of carbohydrates (which should preferably be present in complex form).
A diet like this, in itself, makes you lose weight, but due to the relative lack of calories, it could lead to a great loss of protein-based organic components (muscles and bones, for example). This is where HCG comes in, helping the body to save its proteins and turn to obtaining the energy it needs to function by optimizing the use of its own stock of stored fats.
In short: the diet makes you lose weight, and HCG helps save proteins in the body.
STEP TWO - Before continuing, read the content of this link: https://icaro.med.br/hcg-para-emagrecimento/
STEP THREE - What about the effects of HCG as a hormone itself: does it help directly in the process of losing weight? Can it interact negatively with contraceptives? And in men?
- Before I go any further, how do conventional contraceptives work? In a nutshell, this can be understood from the explanation at this link: https://icaro.med.br/anticoncepcionais/
(***) It's worth noting that I shared this link only to show a succinct explanation of how conventional hormonal contraceptives work, but in general, I no I recommend using them for these reasons: https://icaro.med.br/paramulheres/
- Secondly, basically, how the HCG hormone works: it is structurally similar to FSH, LH and TSH: https://pt.wikipedia.org/wiki/Horm%C3%B4nio_estimulante_da_tiroide
HCG may, in part, have similar actions to these hormones on their receptors, and the action on TSH receptors may even be stronger than that of TSH itself in some cases.
Another mechanism of action of HCG is through the inhibition, in the liver and muscles, of enzymes involved in glycolysis and the esterification of fatty acids. For this reason, as the body is less able to use glucose as an energy source and less able to store fat in adipocytes, it ends up optimizing the burning of available fat. In other words, if this fat doesn't come from the diet, it will have to be provided by the body itself, by releasing its reserves.
Specifically on the doubts: if contraceptives aim to reduce levels of LH and FSH, but HCG can act like these hormones (partially) on their receptors, HCG and contraceptives could, in theory, interfere with each other. For the same reason, by acting partly like LH, HCG can increase testosterone production, especially in men.
FOURTH STEP - Reread the content of this link (https://icaro.med.br/hcg-para-emagrecimento/) after reading all the links mentioned in this text and form your own opinion. After all, it's your well-founded opinion that counts when it comes to your health. In my opinion, only those who have good lifestyle habits, minimal general hormonal balance, no decompensated diseases and good medical and nutritional support can use the HCG method for weight loss. This is because those who improve their lifestyle, make up for deficiencies (in nutrients, neurotransmitters, hormones...), detoxify (eliminate excesses) and resolve alterations in complementary tests rarely need other treatments to achieve healthy weight loss, but when they do, they have a much better chance of success.
Have a good week
Português do Brasil 
English 