Cashews are high in protein and important minerals such as copper, calcium, magnesium, iron, phosphorus, potassium, and zinc. Sodium is also found in trace amounts. Vitamin C, vitamin B1 (thiamin), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B6, folate, vitamin E (alpha-tocopherol), and vitamin K are also found in cashews (phylloquinone). Cashews also have a high oleic acid concentration (an omega-9 fatty acid that is also found in olive oil).