Some people feel certain foods trigger their psoriasis. It's hard to prove or disprove these claims. Scientists don't have much hard evidence on how eating habits affect the skin condition, but most experts say it's a good idea to be skeptical.
If you want to see how something affects your psoriasis, make small changes and keep track of what happens. The best approach is to eat a wide range of healthy foods, including lots of fruits, vegetables, whole grains, and lean protein.