A 41-year-old female asked:
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why does it seem like meal replacement and protein shakes don't fill me up or curb my hunger? i normally don't eat a whole lot, but at times can.

1 doctor answer
Dr. David Lipkin
51 years experience Internal Medicine
One possible reason: There are probably several reasons for protein shakes not curbing hunger. One reason is that protein shakes are a dense food compared to let's say lettuce and spinach. A pound of greens would fill up more of your stomach than a pound of protein shakes. The stomach has stretch receptors that notify the brain when it is filled with food. The brain then generates a feeling of fullness and less hunger
Answered on Dec 22, 2014
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