The adventurous roast beef gyro contains 550 calories, 29 grams of fat, and 1,290 milligrams of sodium. The nondescript “gyro meat” option clocks in at 710 calories, with 44 grams of fat, and 1,360 milligrams of sodium, while the turkey version has 470 calories, 20 grams of fat, and 1,520 milligrams of sodium.