Oats are loaded with important vitamins, minerals and antioxidant plant compounds. Half a cup (78 grams) of dry oats contains (5):
Manganese: 191% of the RDI
Phosphorus: 41% of the RDI
Magnesium: 34% of the RDI
Copper: 24% of the RDI
Iron: 20% of the RDI
Zinc: 20% of the RDI
Folate: 11% of the RDI
Vitamin B1 (thiamin): 39% of the RDI
Vitamin B5 (pantothenic acid): 10% of the RDI
Smaller amounts of calcium, potassium, vitamin B6 (pyridoxine) and vitamin B3 (niacin)
This is coming with 51 grams of carbs, 13 grams of protein, 5 grams of fat and 8 grams of fiber, but only 303 calories.
This means that oats are among the most nutrient-dense foods you can eat.