As if I wasn't regretting last night's bar nachos enough, salt also dehydrates your skin cells. "This leads to poor skin tone and can predispose you to wrinkles," explains Swanson. So, you should also cap the Pringles can if you don't want to resemble a shar-pei in 10 years.
While gluten (a mixture of proteins found in wheat and related grains) is specifically problematic for those with celiac disease or a gluten sensitivity, Weiser explains that its pro-inflammatory properties can worsen anyone's skin rashes, irritation, redness, and itching. "Gluten can also cause dermatitis herpetiformis, an inflammatory and superficially blistering condition that primarily affects elbows, knees, buttocks, and sometimes around the mouth," says Weiser. Not the buttocks!