Spinach also contains B vitamin that helps form red blood cells .spinach provides antioxidants tied to anti-inflammation and disease protection. The anti-inflammatory effects of spinach make it a key contender for protecting the brain. Spinach is a source of naturally occurring nitrates, compounds that open up blood vessels to improve blood flow and ease the workload on the heart. Cooking also diminished the vitamin E levels in spinach but increased vitamin A content. Spinach improves immunity, prevents anemia, and achieves eye health. It is also good for healthy skin and hair. Vitamin A, calcium, vitamin E, and thiamine are present in spinach.