I have a juicer, but since I am not Karen Kitchen, by the time I get a glass of juice and get all the mess cleaned up I'm sure the stress has nullified the good effect of the juice 10 times over. I also don't have a place where I can leave it set up as this is not my house.
All the foods have wonderful medicinal properties. 2 stalks of celery a day can lower blood pressure to normal. The active ingredient is that pungent taste in the celery. Anything red seems to have great effects in shrinking tumors - beets, bloodroot, raspberry ... I think the colors in the produce are some of the most beneficial molecules. Yes, the vibrational quality of raw, live food is a plus. There are also some advantages to cooked foods - look to Traditional Chinese Medicine - there is a balance.
Wild food is said to have additional energies not found in cultivated food.
Vine-ripened is very important and you won't find much of that in a grocery store. This is one of the great benefits of having your own garden - you do not pick until the peak of ripeness when added nutrients are pulled into the fruit.
Berries are a favorite of mine for the dark purple, blue, and red pigments.
Most of the modern hybridzed fruit has way too much sugar, so it is better to go with mostly juicing veges.
1.5 cups of blueberries a day are said to reverse age-related declines in motor skills and cognitive function.
I Have a large book called
The Encyclopedia of Healing Foods by Michael T. Murray, JOSEPH PIZZORNO, and Lara Pizzorno
http://tinyurl.com/komp6u