What is Grapefruit?
{{Taxobox | name = Grapefruit | image = Grapefruit_700x490.jpg | image_width = 250px | image_caption = A basket of grapefruit | regnum = [[Plant]]ae | divisio = [[flowering plant|Magnoliophyta]] | classis = [[dicotyledon|Magnoliopsida]] | subclassis = [[Rosidae]] | ordo = [[Sapindales]] | familia = [[Rutaceae]] | genus = ''[[Citrus]]'' | species = ''C. paradisi'' | binomial = ''Citrus paradisi'' | binomial_authority = Macfad. | genetic make-up = lipstick & eyeliner }} '''Grapefruit''' is a [[citrus]] [[fruit]] grown in [[sub-tropical]] places. It is bigger than an [[orange (fruit)|orange]] and is often more sour, but many types of grapefruit have other flavors. The tree which the grapefruit grows on is normally 5-6 meters tall but can reach up to 15 meters tall. It has dark green leaves that measure up to 150mm and has white flowers that grow 5cm in length. The fruit itself can grow 10-15cm in diameter. In 2007, there were about 5,061,023 tons of grapefruits made worldwide, most of the tons coming from the U.S. There are many different kinds of grapefruits with different color [[Pulp (fruit)|pulp]]. The most popular colors are red, white and pink. There are also a wide range of flavors grapefruits have, from highly acidic and bitter to sweet. == Drug interactions == While they were doing research for a drug against [[high blood pressure]] in 1989, scientists found that its effectiveness was worse in people who had eaten grapefruit.<ref>{{Cite news|last=Bakalar|first=Nicholas|title=Experts Reveal the Secret Powers of Grapefruit Juice|language=en|url=http://www.nytimes.com/2006/03/21/health/21grap.html|access-date=2024-12-30}}</ref> Two years later, at the start of 1991, they published their findings in the [[scientific journal]] [[The Lancet]].<ref>David Bailey et al.: ''Interaction of citrus juices with felodipine and nifedipine.'' In: ''[[The Lancet]].'' Band 337, Nr. 8736, 1991, S. 268–269, [[doi:10.1016/0140-6736(91)90872-M]]. [https://mycluub.co.uk/david-bailey-olympian-and-pharmacologist-who-discovered-t