It may not technically be the most cholesterol-packing, artery-clogging burger around, but critics say it's up there with some of the worst offenders.

We're talking KFC's new Double Down sandwich, marketed, perhaps hopefully, as a good alternative for those trying to avoid too many carbohydrates.

That's because this fast food offering is a bun-less sandwich.

Two thick slabs of fried chicken in batter, a filling of bacon, two melted slices of cheese and mayo in a bread-free burger.

KFC is making much of its low carbohydrate content, but what about the actual calories?

The fast food chain says it packs 540 calories but other testers claim a figure near 1,200 is more accurate.

In case you're wondering, that's half a man's recommended daily intake in one go.

Two-thirds of people in the US are overweight or obese and diet is a big talking point.

Mayor's warning

New York's mayor Michael Bloomberg has insisted all fast food joints publish calorie counts to warn diners about the dangers lurking within their meals.

Nutritionists are making a lot of noise as well.

They're pointing out that with a heavy serving of salt and fat - including saturated fat - this isn't exactly the healthy option. Oh, and it's low in fibre too, they say.

It's just chicken and bacon and I don't eat stuff like that. 500 calories is a lot. Takhira, 18, New York

Currently there are no plans to bring the Double Down to the UK.

But do fast food fans like it? Newsbeat has been on the streets of New York to find out.

Nineteen-year-old Oscar said: "It's disgusting. It's just so greasy and unhealthy for you. If anyone thinks it's good for you because there's no bun, they're idiots."

Takhira Laguer, 18, and a student in Manhattan said: "That's just nasty. I wouldn't buy it. It's just chicken and bacon and I don't eat stuff like that. 500 calories is a lot."

However it wasn't all negative, 23-year-old James from Queens was excited about trying out the new meal.

"I would definitely try it", he said. "I love my food, especially fried chicken. It smells good."