http://en.wikipedia.org/wiki/Juice
In New Zealand (and others) juice denotes a sweetened fruit extract, whereas nectar denotes a pure fruit or vegetable extract....
The high sugar content of fruit juices is often not realised—many fruit juices have a higher sugar (fructose) content than sweetened soft drinks; e.g., typical grape juice has 50% more sugar than Coca Cola[11]
Fruit juice consumption overall in Europe, Australia, New Zealand and the USA has increased in recent years,[12] probably due to public perception of juices as a healthy natural source of nutrients and increased public interest in health issues. Indeed, fruit juice intake has been consistently associated with reduced risk of many cancer types[13][14][15][16][17][18][19][20], might be protective against stroke[21] and delay the onset of Alzheimer's disease.[22]
The perception of fruit juice as equal in health benefit to fresh fruit has been questioned, mainly because it lacks fiber and has often been highly processed.[citation needed] High-fructose corn syrup, an ingredient of many juice cocktails, has been linked to the increased incidence of type II diabetes. High consumption of juice is also linked to weight gain,[23] but fruit juice consumption in moderate amounts can help children and adults meet the daily recommendations for fruit consumption.[24][25]