IDK really
"What if you decided to fool your taste buds with a fat substitute? A recent study by Swithers et al., in
Behavioral Neuroscience, discovered that the taste of fat on the tongue might be enough to trigger the body to inappropriately metabolize all the calories you consume. Rats that ate a
diet that contained a mixture of real fat and fat substitute actually gained more weight and developed more fatty tissues than rats that only consumed real fat. The overall message of these studies is that our bodies have evolved a sophisticated system for monitoring the content of fat in our mouths and gut and that this system can be altered by what we choose to eat. "