If you felt bummed out after Thanksgiving, blame the sweet potatoes. Foods that make you sad...

Comfort food may make you feel better for a while...

...but some of them can actually make you sad in the long run. Drew Ramsey, author of “The Happiness Diet,” says some of our favorite foods actually have some depressing effects on us. Here’s the list:

• Sweet Potatoes: Candied or marshmallow casserole sweet potatoes start the suffering process for your brain and mood minutes after eating them. The high sugar levels do a number on our brain and nerve function. Naked sweet potatoes are fine. 

• Holiday Ham: Hams from factory farms are injected with sugar, salt and fillers that may leave you feeling full – with a migraine and swollen ankles.

• Margarine: It’s a fake food and our bodies don’t know how to deal with that. It can throw our insulin levels off and trigger a bad mood.

• Potato Chips: They may taste good – but the more you eat the more you’re blocking up your pleasure sensors with fatty acids.

• Bagels: They’re packed with refined carbs that crash energy and can kill a good mood.