A systematic review found 37 experimental studies that changed the number of foods or sensory characteristics and measured actual intake. Thirty studies contributed to the meta-analysis.
One taste and many tastes
Higher-variety conditions produced a small-to-medium increase in intake.
g = 0.405small to medium effect37 studies
Sensory-specific satiety
Fullness may not arrive just once for the whole meal.
As one food is eaten, its taste and aroma can become relatively less appealing—a process called sensory-specific satiety. A new sensory experience can renew part of the desire to eat.
This does not fully prove “dessert stomach,” but it shows that appetite is not one simple meter.
Two sides of variety
More variety is not automatically worse.
Variety can increase intake while also expanding fruit and vegetable choices and supporting dietary quality. The review also found high risk of bias and considerable differences among studies.
Ten candy flavors and several vegetable side dishes should not inherit one verdict.
What to keep
Before reducing variety, ask what kind of variety increased.
How MorselFlow fits
One photo holds the number and color of dishes together.
Without reconstructing every item from memory, a photo keeps how the staple, main, sides and dessert shared the table.
Observe the variety before deciding whether it was too much or too little.
This article explains research for a general audience. It is not individualized nutrition advice. Effects vary by food, participants and experimental conditions; variety cannot be labeled universally good or bad.