Food isn't like it was in the past. The food industry thought fat was unhealthy, but it made food taste good. They substituted fat with Sugar to make it taste better. However, they've discovered that the fat was better for you than the sugar. Actually, fats like butter have been shown to be good for your brain. White bread also didn't have gluten in it in the past. My mom says that all these people weren't getting cancer (and she hardly saw overweight people) when she was younger. I think it's because food was healthier without all these additives, and there wasn't as much junk food sold.
Accutane has been shown to cause severe food allergies so I'm not surprised if some former users now have food allergies .