Dark Leafy Greens According to Dr. Sethi, leafy greens like kale and spinach are great at fighting against inflammation. "According to a study published in JAMA Psychiatry, severe depression has been linked with brain inflammation." Try incorporating a little bit into each of your meals like adding it into your smoothies and omelettes. One study even found that a diet rich in leafy greens led to sharper memory and slower decline. Give us all the greens, please! Image Source: Getty / Cavan Images