Healthy eating equals healthy skin. “I tell my patients that anything inherently bad for you, like foods with a high-glycemic (sugar) index could potentially flare one's psoriasis,” says Dr. Friedman. Try to cut back on processed foods including white bread, donuts, bagels, and sugary drinks. Some studies also show that curcumin, which gives turmeric its orange color, can be helpful at high concentrations for psoriasis. Pick this super food up in powder form from a health store and mix it into a smoothie with avocado, nut butter or coconut oil for better absorption.