Come Thursday many of us will sit down to a Thanksgiving dinner, and that means the beginning to a season of eating some of our holiday favorites.

Holiday eating can also mean that we can easily pack on the pounds if not careful.

Good Question: What are the worst Thanksgiving diet busters?

The average Thanksgiving dinner can have more than 2500 calories, that's more than a full day's worth.

With so many foods to choose from the temptation to over indulge is one of the biggest diet pitfalls.

Dietitians say some of our favorites in a Thanksgiving meal can have some real calorie consequences.

The worst offenders per serving on the table can include:

Candied sweet potatoes-450 calories
Bread stuffing-400
Green Bean Casserole-240
Turkey-Dark Meat-319
Jello Mold-428
Pecan Pie-816.

Pumpkin pie, a Thanksgiving staple actually comes in at only 340 calories a slice.

If you had just one serving of all the worst items your meal would consist of 2,653 calories.

So how do we avoid over eating?

"Always have a sensible breakfast, it breaks the fast from the night before and it gets you going for the day," says Maria Boosalis, a dietitian.

Boosalis also says filling your plates with color like fruits and vegetables adds nutritional value and she also recommends using a smaller plate for portion control.

Nutritionists also say watch what you drink, sweetened beverages, even alcoholic drinks can really pack on the calories.