 
Typical nutrition values for ½ medium grapefruit (154g) 0 |
 
Typical nutrition values for 8 fl oz (1 cup, 240 mL) grapefruit juice 0 |
- The term "phytonutrients" is commonly used interchangeably with the term "phytochemical." Phytonutrients are plant compounds which are thought to have nutritionally important or health-promoting qualities.
- Scientists are discovering that these plant-derived components are intimately involved in fighting cellular damage, a common initiation step in the pathways for cancer, aging and a variety of diseases.
- Unlike commonly known nutrients (protein, fat, vitamins, minerals), some of the nutritional/health roles phytonutrients play are only now being understood, so the recommended daily amounts considered "essential" for health may not yet been determined or verified. However, the importance of phytonutrients is steadily becoming apparent as research uncovers more benefits.
- Grapefruit naturally contains a wide array of phytonutrients; some are known as flavonoids, a class of natural compounds. Some flavonoids have been reported to have anti-oxidant, anti-allergic, anti-inflammatory, anti-viral, and anti-carcinogenic activities which may help protect against various diseases and conditions.11 Naringin is the most common flavonoid found in grapefruit.
