Peppers are an anti-inflammatory superfood—but go red to reap the most benefits. Out of the three colors of bell pepper, red have the highest amount of inflammatory-biomarker-reducing vitamin C along with the bioflavonoids beta-carotene, quercetin, and luteolin, according to research in the Journal of Food Science . Luteolin has been found to neutralize free radicals and reduce inflammation. Beta-carotene is a carotenoid, fat-soluble compounds that are associated with a reduction in a wide range of cancers, as well as reduced risk and severity of inflammatory conditions such as asthma and rheumatoid arthritis. And allergy research has shown that quercetin acts as a mast-cell stabilizer, which decreases the number of cells reacting to an allergen. Mast cells are responsible for releasing histamine during inflammatory and allergic reactions.