Popeye the Sailor loves Spinach. Well, spinach is High in brain-friendly folate & B-vitamins. Folate educes inflammation that harms brain function. L-tyrosine in spinach improves mental focus. A cup of steamed spinach contains more than 65% of your Daily Value (DV) for folate and more than 20% of your DV for vitamin B6. Here are few spinach recipes you can try at your home.