HCG, or human chorionic gonadotropin, a hormone associated with pregnancy, is used in combination with a very structured diet to encourage weight loss. Proponents of HCG diet programs claim that supplements of the hormone decrease hunger and encourage fat burning in specific locations such as the belly, arms, buttocks and thighs.
HCG and Metabolism
HCG supplements are administered as injections, oral drops and transdermal creams. Daily doses are absorbed into the blood stream. Proponents claim that the resulting hormonal changes produce a boost in the body's fat metabolism in targeted areas, while preserving muscle tone. Programs marketing HCG for use with diet and weight loss claim that the hormone has the potential to increase the rate of weight loss, encouraging rapid results and curbing hunger.
Weight Loss Plans
The typical HCG diet plan calls for a very low calorie diet with a total daily intake of 500 to 800 calories. Foods are restricted to small servings of lean proteins and low-carbohydrate vegetables such a broccoli, kale, spinach and asparagus. High carbohydrate foods and beverages are strictly prohibited on the diet and fat intake is also carefully monitored.
Expected Results
HCG diet programs state that users can lose up to a pound a day, or between 20 to 30 pounds in one month. The typical diet program lasts from 21 to 40 days, and dieters usually experience a noteworthy weight loss during that time. The Mayo Clinic notes that weight loss achieved on the program may be regained once participants return to their normal diets and increased caloric intake upon completion of the diet.
Expert Insights
Critics of HCG diet programs question the claims that HCG can increase metabolism. The Mayo Clinic notes that there is little scientific evidence that HCG has any true effect on weight loss and suggests that results from the plan are due to the very low calorie meal plans rather than the HCG supplements. In addition, consumers should be aware that HCG is not approved by the Federal Drug Administration for use with dieting and many forms of HCG marketed by diet programs are not regulated or certified as medically viable substances.
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