Consuming one hundred percent fruit juice does not alter blood sugar levels, study suggests

A new study published in the Journal of Nutritional Science suggests that consuming 100% fruit juice does not significantly impact fasting blood insulin, fasting blood glucose, or insulin resistance.

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The results are consistent with prior studies which have shown that consumption of 100% fruit juice is not linked to increasing risk of developing type 2 diabetes. It also supports a growing body of evidence that fruit juice has no significant impact on glycemic control.

The study involved comprehensive data analysis that quantitatively evaluated the correlation between consumption of 100% juice and blood glucose control.

The systematic review involved a meta-analysis of 18 randomized controlled trials (RCT) and assessed the effect that 100% juice from fruits like apple, citrus, berry, pomegranate, and grape, has on fasting blood insulin and blood glucose levels. This was used as a biomarker for diabetes risk.

According to The American Diabetes Association, more than 90% of the 29 million cases in adults and children in the United States fall in the category of type 2 diabetes—a metabolic disorder where the body is incapable of responding to insulin.

Following a healthy lifestyle is the first line of defense for preventing and treating type 2 diabetes. A healthy diet, regular physical exercise, and maintaining a healthy weight are also encouraged.

The US Dietary Guidelines state that  a healthy eating pattern should  include vegetables, fruits, low-fat or fat-free dairy, grains, and a variety of protein foods. A 4-oz. glass of 100% fruit juice could replace one serving (1/2 cup) of fruit, and can supplement whole fruit to help people add more nutrition to their diets.



  1. Mario Stevens Mario Stevens Canada says:

    This irresponsible study is more likely paid by the juice industry.

    Drinking juice is not even close as eating a fruit. The juice portion is the pure sugar from many fruits together, without the benefit of the fiber found in the fruit. There is more, a single cup of orange juice have the contents of more than 4 oranges and nobody that I know east 4 oranges in a sitting.

    There is more: Because the juice does not contain the fiber to slow its absortion it floods tjhe liver with excess sugar, which triggers insulin response, which overtime can cause insulin resistance and Type 2 diabetes.

  2. Peter Johnson Peter Johnson Australia says:

    I cannot find anywhere in the article where it states that there is no fiber. Fiber is not fibers. (Dietary) fiber is defined as indigestible complex carbohydrates.

  3. Peter Johnson Peter Johnson Australia says:

    You would do well to read the original article and the associated editorial (in the American Journal of Clinical Nutrition): and

    This article nor the original study publication reference dietary fiber/fibre; nor do they need to: the meta-analysis concerns metabolic effects of various monosaccharides and the articles certainly do not equate fruit juice to fruit. To do so would be to limit the concept to intestinal absorption (which is only a small part of the overall consideration of dietary health effects).

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