Not even remotely what I said. What's absurd is the idea that "Much of the protective effect of fruits and vegetables is due to their fiber content"
Some, yes. "Much"? No.
Demonstrated by scientific studies? Much.
I wasn't using it to make a positive claim. I was using it to dispute your claim that all the studies were just about blood markers of particular nutrients.
Juice Plus is strongly implying a positive claim; "Look at all these studies that show benefits!" When, in fact, the studies don't show anything of the kind.
Pick a fruit or vegetable, the same can be said. Nutritional research is extremely difficult to do.
Here is one review of studies to start off with. So we have diets high in F&V having demonstrated benefits and we have J+ with none.
Yet if we put the same standards on those "demonstrations" you would dismiss the studies as invalid. No or extremely poor controls, no placebo group, no blinding etc etc.
Show me the reviews that demonstrate the efficacy of J+ and I'll change my mind. Nutritionally, we know that F&V are effective and we also know that products like J+ can't replace F&V. So what is the J+ doing? Nothing demonstrable.
Can't find a good source at the moment (can't read Chinese!) but China introduced reference intakes for a number of phytonutrients last year.
That's interesting, but we don't really have much to go on as far as research establishing reference levels.
So before Vitamin A deficiency was understood, Vitamin A defiency didn't occur. Got it.
Understood. Until such deficiencies are demonstrated to exist, it is premature to sell a product with the kinds of claims made for J+.
There is a far far bigger jump from fruit and veg to synthesised chemical isolates than there is from fruit and veg to powdered fruit and veg.
At which point do you believe the fruit and veg stops having a positive health benefit?
I have no idea. All I do know is that whole fruits and veggies have demonstrated benefits; J+ does not. Thus, buying that expensive supplement seems like a scam to me. When supplements like that are demonstrated to provide better health outcomes, believe me, I will jump on board like I have with all the other recommendations that have been borne out by research.
The blood studies show the micronutrients in J+ are reaching the blood, but you dismiss that as irrelevant. So I assume that means you think it's the fiber itself that is important, not micronutrients?
I don't know what's important. It could be that fiber is important in the absorption of the nutrients. One of my pet theories is that consuming whole foods allows the body to access the nutrients on a slow gradient rather than all at once. Thus, eating whole food throughout the day gives the body access to nutrients as it needs it. Conversely, consuming supplements gives too much nutrient at one time which the body ends up eliminating because it can't use it immediately. But that's my own little explanation of why supplementation has failed to show benefit in healthy people.
I know that whole foods have a benefit. I know that studies of all kinds of supplements have failed to show a benefit. J+ is just another supplement, so I can infer that J+ has no demonstrated benefit. The studies up until now have been insufficient. If and when J+ is demonstrated to have benefit, I will jump on the bandwagon.
Not even Juice+ claims that. The problem is people don't eat the proper amount of F&V. Supplement != Replacement.
Exactly. So what is the point of J+?