Grapefruit is a citrus paradisi in Latin, which means the fruit of paradise. In the seventeenth century, grapefruit Barbados brought Captain James Shaddock, because these fruits at the beginning were called "shaddockami." Its English name is due to the fact that they grow in bunches resembling grapes, hence the combination of the words "grape" and "fruit".
It is the healthiest red variety, which in taste is the most bitter and sour. Variety yellow and green (the sweetest) does not contain many carotenoids, lycopene and vitamin C as red grapefruit.