These photos show how much the dieting industry has changed over the years

Once-successful companies like Weight Watchers and Jenny Craig are now seeing sales plummet, as consumers shift away from diet plans and instead embrace body positivity, according to a Mintel report cited by NPR.

"Dieting is not a fashionable word these days," Tufts University nutrition and psychiatry professor Susan Roberts told NPR. "Consumers equate the word 'diet' with deprivation, and they know deprivation doesn't work."

But consumers are still inundated with images and information about "lifestyle trends" - or newfangled versions of diets - that mesh better with today's obsession with health and wellness.

Here's how the dieting industry has changed.