Cashews are low in sugar and rich in fiber, heart-healthy fats, and plant protein. They’re also a good source of copper, magnesium, and manganese — nutrients important for energy production, brain health, immunity, and bone health Nutritional values per 100g 157 calories. 8.56 grams (g) of carbohydrate. 1.68 g of sugar. 0.9 g of fiber. 5.17 g of protein. 12.43 g of total fat. 10 milligrams (mg) of calcium. 1.89 mg of iron.