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2013-09-11

Which Fruits Lower Diabetes Risk?

So today's study of discussion is about fruits, and my partner and I have just concluded something interesting. Recently, her friend stopped by and gave us a non-organic cantaloupe...and all of a sudden, we have an infestation of fruit flies! All summer, with organic fruits, no fruit flies. Enter non-organic fruits, and whoa, fruit fly invasion. Is this just a coincidence or has anyone else noticed that only non-organic fruits carry these pests? Kind of interesting since you'd think that the pesticides would have the effect of deterring fruit flies. Anyway...

According to the results of 3 combined prospective longitudinal cohort studies, eating certain whole fruits may reduce the risk for type 2 diabetes. Logically, however, fruit juice consumption may increase the risk.

To get a better assessment of the role fruit might have in diabetes risk, researchers combined data from 3 studies: the Nurses' Health Study (n = 66,105 subjects), Nurses' Health Study II (n = 85,104), and Health Professionals Follow-up Study (n = 36,173). Participants in all 3 studies completed questionnaires assessing health and lifestyle factors, including diet, every 2 years.

The researchers excluded participants with a baseline diagnosis of diabetes, cardiovascular disease, or cancer, as well as those who had missing data for fruit or fruit juice consumption or an extremely high or low caloric intake, and those who had an unclear date of diabetes diagnosis.

In the analysis, which was adjusted for personal, lifestyle, and dietary risk factors for diabetes, every 3 servings of fruit per week were associated with a 2% lower risk for type 2 diabetes. When the researchers looked at individual types of fruit in a multivariate analysis, adjusted for the same factors, they found that 3 servings per week of some fruits were more closely associated with reduced risk than others:
  • blueberries = 26% lower risk
  • grapes and raisins = 12% lower risk
  • apples and pears = 7% lower risk
  • bananas = 5% lower risk
  • grapefruit = 5% lower risk
On the flipside, the intake of cantaloupe increased risk by 10% and fruit juice by 8% (for every 3 servings weekly).

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Source: Fruit consumption and risk of type 2 diabetes: results from three prospective longitudinal cohort studies

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1 comment:

  1. I was in Switzerland all summer - with a few days in Amsterdam n a few days in Connecticut n Rhode Island - but I was told that there have been quite a lot of fruit flies around here. We had a dozen of them last week n no fruits outside of the fridge. We only eat organic stuff so ur theory doesn't hold up. There has been an infestation of wasps in garden (I've heard) n fruit flies indoors.
    Dunno why but it got nothing to do with wether the stuff is organic or not.
    I find that it has more to do with temperature n air moisture (weather).
    Just my 2 cents. :)
    Ciao!

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