Is modern junk food really, ultimately, less 'fake' and 'unnatural' than Photoshopped images?
Obesity is responsible for over 100,000 deaths per year in the US [1]. By comparison, anorexia is responsible for an estimated 145 deaths per year in the US [2]. It's grossly irresponsible of organizations like Huffington Post to glorify obesity to our children - it's no stretch to suggest they are probably killing people with their promotion of an ideological viewpoint that seems to be based on a misguided idea that 'body image issues' pose a greater public health risk than obesity, combined with some sort of feminist / relativist doctrine that 'beauty standards' are cultural, or something.
Of course it can be unhealthy to obsess about body image. But there's a fine line between "learning to accept yourself", and "learning to accept giving yourself type 2 diabetes".
Even if we could arbitrarily redefine society's "standard of beauty", wouldn't it make more sense to try redefine it to something healthy? I mean, if the "average woman" had smoker's teeth, would we have to redefine the "standard of beauty" to be "smoker's teeth"? Would we have a "real teeth have smoke stains" "movement"? 100 years ago, the obesity rate was under 10% ... today's rate is the historical aberration; it in some sense is as unnatural as Photoshop.
To be fair, the obesity problem is complex, multi-causal, and not entirely understood. I'm not callously suggesting it's easy for everyone to stay slim; quite the contrary. But if you adopt this nonsensical irrationalism, then you are indeed sunk. I think if you don't worry about 'image' too much, but at least try to work at being somewhat healthier, then you're halfway there.
[1] http://www.cdc.gov/PDF/Frequently_Asked_Questions_About_Calculating_Obesity-Related_risk.pdf
[2] http://www.ncbi.nlm.nih.gov/pubmed/11513012
* Note: Thin women are also real.