Medically reviewed by Erika Prouty, PharmD Key Takeaways Sumo Citrus can support immune function because they’re rich in vitamin C, a nutrient essential for immune cell activity.Eating enough vitamin ...

With its notably sweet flesh and easy-to-peel skin, Sumo Citrus changed how Americans think about mandarins. Here are the four citrus varieties growers are betting on next. Citrus fans know that the ...