“Vitamin Water” is simply expensive water, sugar (usually in the form of High Fructose Corn Syrup) coloring, artificial “vitamin” isolates (not the whole complex as would be available in real raw food) and  flavoring.  Synthetic chemicals are not food, but they are cheap.
Synthetic vitamins are made in a laboratory setting from coal tar [...]

The body processes the fructose in high fructose corn syrup differently than it does old-fashioned cane or beet sugar, which in turn alters the way metabolic-regulating hormones function.
Fructose  bypasses the digestive process that breaks down other forms of sugar. It arrives intact in the liver where it causes  the following reactions:
When fructose [...]

ScienceDaily (Aug. 23, 2007) — Researchers have found new evidence that soft drinks sweetened with high-fructose corn syrup (HFCS) may contribute to the development of diabetes, particularly in children. In a laboratory study of commonly consumed carbonated beverages, the scientists found that drinks containing the syrup had high levels of reactive compounds that have been [...]