But may be not by as much as you might think.
The Associated Press asked Cornell University's Food and Brand Lab to analyze Thanksgiving recipes from Better Homes and Gardens.
The researchers compared dishes from the 1950's to 21st century versions.
Calorie counts for five of the eight recipes actually dropped by almost a third.
Even mashed potatoes and pumpkin pie are slimmer today.
Cornell researcher Laura Smith says much of the calorie reduction is due to healthier ingredients like low-fat milk instead of cream.
Of course, if you have seconds or thirds that lower calorie count won't mean very much.