gutshot - she’s not a nutritionist, so she can’t recommend what you should take, only that you find out more from a qualified source (not ads) if possible, and know how much you’re getting from a product.
anyways, i did ask her and here’s her response:
"In experiments conducted by the US Dept of Agriculture, volunteers
were asked to ingest large quantities of fruits that have been
identified as having high levels of antioxidants, and their blood were
subsequently tested for antioxidant capacity. One important note is
the large amount of fruit required per ingestion - for example -
volunteers in the Kiwi fruit group must eat 4 kiwis. The cherry group?
45 cherries. This should give consumers an idea of the potential
“starting” dose needed to gain an antioxidant benefit - and this is
PER DOSE. (imagine eating 45 * 3 cherries a day - if you want to get
the benefit of cherries’ antioxidant properties with every meal.)
This does make for an attractive commercial market to give consumers
“concentrated” forms of antioxidants - except most of companies
providing these types of nutrition products are not regulated by the
FDA - that branch of the government regulating food and drugs to make
sure that you as a consumer aren’t being ripped off or worse -
physically harmed by ingesting unsafe products. Unfortunately, history
has shown that the FDA only steps in when enough people get sick or if
a few people begin to die from the so-called “nutraceutical” - just
look at the ephedrine cases in the mult-billion dollar weight-loss
industry.
Currently there is no agreed projection of antioxidant intake because
this can fluctuate based on individual energy intake, caloric
consumption, and especially environmental or confounding health
related factors like exposure to cigarette smoke or disease
(increasing body’s oxidation burden). There are researchers who are
trying to determine what these individual needs may be, but for the
most part, consumers have been inundated by commercial entities eager
to profit on a perceived benefit of “high antioxidant intake”. For
example, via Quackwatch:
http://www.quackwatch.com/01QuackeryRelatedTopics/PhonyAds/acai.html
The verdict? If you like to drink exotic berries for the taste,
there’s no problem with indulging yourself but if you’re looking for
some of these commercial products for bona fide healthcare benefits,
require the claims to be backed up by randomized, double-blind placebo
controlled clinical trials, with full disclosure of side effect
profiles experienced by the human subjects.
(…and if there is really some miracle plant bearing amazing
therapeutic properties, the pharma companies would outrun anyone to
isolate the agents, synthesize/mass produce, and submit it through the
proper legal govt channels for commercialization! that was how we got
cancer drugs from the pacific yew tree.)"