http://www.boston.com/bostonglobe/magazine/articles/2007/12/16/a_clear_connection/?page=3
Despite the shoddy science, dermotologist dogma and "popular wisdom" became "diet does not effect acne". In the 30 years since I was was a pimply-faced kid, millions upon millions were spent on creams, washes, ointments and pills as embarrassed teens tried to get rid of the horrible zits. All the while the real culprit got a free pass. That culprit is carbohydrates.
"Associate Professor Mann and PhD researcher Robyn Smith, in conjunction with staff from the Department of Dermatology at Royal Melbourne Hospital, recruited 50 boys and divided them into two groups.
One group consumed a typical teen diet of sugary snacks and processed foods, while the other followed a more natural diet higher in protein and with low-GI foods such as wholegrain bread, pasta and legumes replacing the normal high-GI foods such as potatoes, rice, white bread, cakes, biscuits, soft-drinks and sugary snacks that elevate blood glucose levels and insulin levels so dramatically..."The acne of the boys on the higher protein-low GI diet improved dramatically, by more than 50 per cent, which is more than what you see with topical acne solutions," said Associate Professor Mann.
“A diet high in processed foods pushes glucose and insulin levels higher, exacerbating the problem, but low-GI foods do the opposite. The mechanism and the results are as clear as day.” http://www.sciencealert.com.au/diet-causes-pimples-5.html
While this study does give insight in to the pimple problem, it only gets it half right. By concentrating on low Glycemic Index foods, it ignores foods that do not raise blood sugar, but do raise insulin because they directly effect the liver. Glycemic Index does give clues, but it is a confusing and incomplete measure of what is going on. It appears to me that limiting carbohydrates of ALL KINDS may very well bump the 50% helped number up to 80% and beyond.
Can reducing carbohydrate consumption end THIS?
Instead of relying on harsh prescriptions and mostly useless creams or lotions, your key to clear skin is to eliminate sugars, starches, and grains from your diet. While many of us use a low carbohydrate diet to lose weight, eating protein, healthy fats, leafy greens, and low carbohydrate fruits can also clear up your skin. Not only will teens have a good chance at avoiding the soul-crushing "pizza face" moniker, it will set them up for continuing health throughout their entire lives.