Data from the EPIC-Oxford study, which compares different dietary groups, showed that vegan participants had the highest levels of folate in their blood. However, being vegan is no guarantee that you’re getting enough folate! Make sure that your diet is rich in this nutrient by including good sources daily, such as leafy greens, beans, peas and lentils. Oranges, beetroot, quinoa, mango, asparagus, avocado, okra, parsnips, chia seeds and ground linseed (flaxseed) also contain useful amounts of folate.