I don't think they provide much benefit - I still consider them junk food - the same as eating a Snickers bar & popping a multi-vitamin.
And Luna bars are smothered in fractionated palm kernal oil **eek**
Like others, I like most of what Dr. Andrew Weil says (but not all).
Here is what he says about palm oil:
"Fractionation is a further phase of palm oil processing, designed to extract and concentrate specific fatty acid fractions. Fractionated palm oil, as found in food products, has a higher concentration of saturated fat than regular palm oil and is used for the convenience of manufacturers who like its stability and melting characteristics. The healthful aspects of natural palm oil are largely lost in the process. Ive noticed that fractionated palm oil is now a common ingredient in many power bars sold in health-food stores.
The bottom line is that of all these oils, organic, minimally processed palm oil is the healthiest, followed by conventionally processed palm oil. Palm kernel oil is less healthy still, and fractionated palm oil is the least desirable."
I guess they're OK if you eat one now & then (moderation rears its head yet again!), but I know people who eat one a day, thinking they're eating something healthy. To me, they're basically just candy bars with vitamins.
ETA: here's where i got that quote
. And Epski, tupperware works wonders for preventing the imminent ruin of fruit-in-backpack