I bought this Pomelo citrus fruit at the grocery store for when I saw this man buying one. He said they are good if they are a sweet batch which he was hoping it was. Luckily it was sweet and delicious.
Pomelo is a natural non hybrid fruit native to south and southeast Asia, one of the original citrus species from which cultivated citrus came.
Reading about the nutrition, I discovered it is a great fruit for diabetics! This link says 'Pomelo helps reduce the secretion of insulin, which in turn dampens the appetite to eat.'
Unfortunately it conflicts with some blood pressure medications, along with grapefruit, such as the one I am on.