Strawberries – One of the most popular berries on the planet, strawberries tend to be loved by most and for good reason – not only are they super delicious, but they also contain vitamin C and K, along with folic acid and manganese in beneficial levels. They contain significant amounts of phytonutrients and flavonoids, which is what gives them their vibrant red colour. It’s said that strawberries are quite low in sugar, so won’t spike blood sugar levels as much as other fruits can.