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Fiber also aids in dieting because it promotes satiety. Medifast shakes contain no saturated fat, while Lean Shake provides 0. There are alternatives to GNC Lean Shakes offering similar nutritional value and benefits to weight loss. All our own products are made with premium ingredients supported by science and formulated in the United States in GMP-certified facilities. This is how much it costs to start on the respective program. This means it's better to eat low-calorie foods.


According to some studies in rats, it can inhibit a fat producing enzyme called Citrate Lyase, making it more difficult for the body to produce fat out of carbohydrates (1). Other rat studies show increased levels of the neurotransmitter serotonin. This could theoretically lead to reduced appetite and cravings (2).

What can I do to prevent this in the future?