This has been discussed >ad nauseum< in this forum that as with >any< form of fasting the metabolism slows down. This is a fact of life and the body was created to do this and that if you go back to your old habits you will gain the weight back. The Master-Cleanse is not a weight loss diet primarily. While it is a great jumpstart in a weightloss program it just isn't a "diet". That's why the Master-Cleanse or any form or fasting is a surefire plan for failure if used as weight loss diet >>>without<<< a follow up plan. Read the link below for more insights on using the Master-Cleanse as >>part<< of a weightloss program.

MC and weight loss

According to Dr. Joel Fuhrman in his book "Fasting and Eating For Health" (pg 188)the metabolic rate will drop about 20% in a diet of 500 calories or less. Since The Master Cleanse does contain more calories than that, and those calories are pure carbohydrates, the metabolism may not slow down quite as much, but it will drop. In an ultra low calorie diet where the body must draw its fuel source from within, there are variations in the change of metabolic rate from person to person. Someone with a lot of body fat will lose more weight faster than a thin person. The slender person's metabolism will slow down faster to preserve its mass. This is a survival technique to prevent the body from consuming vital muscle mass and organs during times of fasting (famine).
Since The Master Cleanse does contain large amounts of Sugar to be converted into glucose, the body's fuel of choice; it will only go through mild ketosis. Some adipose tissue will be burned of course, and there is the diuresis factor too; but Master Cleanse is more about shutting down the digestive system and detoxing it than the much harsher systemic detox of water only fasting. The positive side is that Master-Cleanse and related cleanses are much easier and gentler than water only, and most individuals can enjoy a normal lifestyle (minus eating of course). Water only fasting is more of a healing modality, the cleansing is faster, deeper and more intense, and bed rest is usually recommended.
When any fasting program is aimed primarily at maintained weight loss, the after fast lifestyle is much more important than the fast itself. Last week I wrote an article in the Fasting For weight Loss Forum on metabolic rate after fasting, I believe that article was reposted in the FAQs. Click on that site and see if there is anything there by "hopinso". It gives dietary advice for the first weeks after fasting.
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According to Dr. Joel Fuhrman in his book "Fasting and Eating For Health" (pg 188)the metabolic rate will drop about 20% in a diet of 500 calories or less. Since The Master Cleanse does contain more calories than that, and those calories are pure carbohydrates, the metabolism may not slow down quite as much, but it will drop. In an ultra low calorie diet where the body must draw its fuel source from within, there are variations in the change of metabolic rate from person to person. Someone with a lot of body fat will lose more weight faster than a thin person. The slender person's metabolism will slow down faster to preserve its mass. This is a survival technique to prevent the body from consuming vital muscle mass and organs during times of fasting (famine).
Since the Master Cleanse does contain large amount of Sugar to be converted into glucose, the body's fuel of choice; it will only go through mild ketosis. Some adipose tissue will be burned of course, and there is the diuresis factor too; but Master Cleanse is more about shutting down the digestive system and detoxing it than the much harsher systemic detox of water only fasting. The positive side is that Master-Cleanse and related cleanses are much easier and gentler than water only, and most individuals can enjoy a normal lifestyle (minus eating of course). Water only fasting is more of a healing modality, the cleansing is faster, deeper and more intense, and bed rest is usually recommended.
When any fasting program is aimed primarily at maintained weight lose, the after fast lifestyle is much more important than the fast itself. Last week I wrote an article in the Fasting For weight Loss Forum on metabolic rate after fasting, I believe that article was reposted in the FAQs. Click on that site and see if there is anything there by "hopinso". It gives dietary advice for the first weeks after fasting.