The women I have worked with on the HCG Diet since 2007
generally have a great deal of trouble keeping the weight off after
the diet if they are taking synthetic estrogen. If you take the
correct amount of hCG while on the HCG diet, it will not effect
your estrogen levels. If you take too much hCG while on the HCG
Diet, it will act as a precursor and elevate estrogen levels.