There are medical claims that people who eat chocolate regularly tend to be thinner.
Scientists believe that despite the high number of calories it may favour weight loss rather than putting on fat.
The findings are based on a study of over 1,000 adults in California.
But the researchers say there are concerns over how much chocolate is consumed. it was only how often they ate chocolate, rather than the total amount, that was linked to their weight.
The researchers found that people who ate chocolate with greater frequency tended to eat more calories overall, including more saturated fat, than those who went light on the candy.
“People have just assumed that because it comes with calories and it’s typically eaten as a sweet, therefore it would inherently have been one way, bad,” said Beatrice Golomb, from the University of California San Diego.