The cashew (Anacardium occidentale) originated in Brazil. Now it is cultivated extensively in all tropical areas, like in India and East Africa. The cashew fruit, which contains the seed or 'nut,' hangs at terminal end of cashew 'apple'. The consumption of cashew nuts helps prevent heart and blood diseases, protect the eyes from UV rays, and help in digestion as they are a good dietary fibre source. Cashew Nut Shell Liquid (CNSL) is a by-product of the cashew industry, containing a soft honeycomb structure and a dark reddish brown viscous liquid.
Cardanol, a phenolic lipid obtained from anacardic acid, is used in the chemical industry for resins, coatings, frictional materials, and surfactants. Regular consumption of cashew nuts can also help with digestion.