Skip to content

A Juice Plus+ Research Analysis

August 24, 2009

Today I am going to help explain the results of the study done on Juice Plus+ at the University of Florida and published in the Journal of Nutrition in 2006.

The above link will show you the article abstract as well as the full journal article. Let me start by making it easy to understand what the scientists were looking for and the results they found. The following is me paraphrasing the journal article.

“Eating fruits and vegetables every day is vital to good health, as many of our scientific colleagues have proven again and again. We (the researchers) hypothesized that a commercially available encapsulated fruit and vegetable juice powder concentrate (Juice Plus+) could support good health by increasing the amount of healthy plant nutrients (phytonutrients) in the body.

This study was done with the highest standards of scientific investigation available today (double-blind, randomized, placebo-controlled investigation). Fifty-nine healthy law students either consumed Juice Plus+ or placebo capsules for 77 days. Blood was collected on days 1, 35, and 77 to examine the number of vital components of the immune system (including B-cells, T-cells, cytokine production, DNA damage to lymphocytes, antioxidant status, and levels of carotenoids and vitamin C).

Furthermore, a log of illnesses and symptoms was kept. The Juice Plus+ group tended to have fewer total symptoms than the placebo group. By day 77 there was a 30% increase in circulating T-cells and a 40% reduction in DNA damage in lymphocytes in the Juice Plus+ group relative to the placebo group (It has now been made very clear by research that DNA damage is the process by which cells mutate and can eventually lead to a cancerous cell mutation. Therefore, reducing this DNA damage is obviously good for your health).

Levels of vitamin C and of Beta-carotene, lycopene, and lutein increased significantly in the Juice Plus+ group. Furthermore, the plasma oxygen radical absorptive capacity (ORAC) increased by 50% (Note that this ORAC value was taken of the actual blood plasma, NOT of a product in a test tube. This means that Juice Plus+ actually increased the body’s ORAC. Many products claim they have a good “ORAC” value but they do it in a test tube which shows you nothing about how that product interacts with the human body).

Interferon-{gamma} produced by phorbol-stimulated lymphocytes was reduced 70% in the Juice Plus+ group, whereas other cytokines (IL-4, IL-6, transforming growth factor ß) were unchanged relative to treatment or time (This is important because too much production of Interferon-{gamma} may be correlated with autoimmune disorders).

The objective of this study was to determine whether a commercially available product (Juice Plus+) could potentially provide measurable health-related benefits in the study population. Most people consume only 3 servings of fruits and vegetables a day, whereas the latest guidelines are to eat at least 5 servings of fruits and
vegetables a day.

Although many phytochemicals (such as thouse found in vitamin supplements) express beneficial activities as single (isolated) compounds in in vitro and animal studies, a variety of phytochemicals such as those found in whole plant foods, is shown by research to be more effective in the prevention of disease than isolated, fragmented vitamin supplements.

In summary, Juice Plus+ was effective in raising carotenoid levels, ascorbic acid levels, and plasma antioxidant capacity. Juice Plus+ also helped increase T cells and reduced the number of symptoms and duration of illness.”

No comments yet

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: