18 of the unhealthiest fast-food items you can order

Wendy's

Now that New Year's has arrived, many people will want to stick to their resolutions, such as losing weight or eating healthy.

But while some fast-food items are healthy, it's very easy to go wrong with fast food and have a few meals undermine your resolutions.

We looked at nutritional data from restaurant chains to find the worst of the worst. Over time, some nutritional data may change slightly - but these items are still high in calories.

Find out which items have the most calories, fat, saturated fat, sodium, and cholesterol.

You'll want to steer clear of them if you're watching your waistline.

Here are the offenders, in order of least to most calories.