Brazil nut- These are rich in selenium, reduce cholesterol levels, oxidative stress, and inflammation, and are found in Bolivia, Brazil, and Peru

Walnuts- An excellent source of omega-3 fatty acid, improve heart health, and blood pressure, also improves cognitive brain function, found in Argentina, Chile, China, France, Greece

Almond- Containing lots of nutrients, reducing "bad" LDL cholesterol, aiding weight loss, helps to  reduce diabetics, found in Afghanistan, Australia, Chile, Greece, Iran

Chestnut- Rich in potassium, helps to regulate blood pressure, increases antioxidant profiles in blood, and eases respiratory disorders found in China, France, Greece, Hungary

Pistachio- High in fiber, increases "good" HDL cholesterol, and improves blood pressure, mostly found in Greece, Iran, Italy, Syria, Turkey, USA.

Cashew- Bursting with nutrients, good for blood pressure and increasing antioxidant profiles in blood, found in Brazil, China, Guinea Bissau, India