I love radish! Radishes have been reported as beneficial for teeth, gums, nerves, hair and nails. They are also said to stimulate the appetite and to relieve nervous exhaustion. Radishes will relieve cases of constipation and catarrh, reduce overweight and help dissolve gallstones. (J.M.Kadans, Ph.D.
Encyclopedia of Fruits,Vegetables, Nuts and Seeds for Healthful Living)
Addition to this post, after I got comments from Tina :http://tinaramsey.blogspot.com/
These are the pictures of long red radish taken from Russian site http://www.seeds.spb.ru/radish.html and white radish called Chinese or Japanese radish Daikon.