Azara Blog: Four glasses of apple juice a day will allegedly keep the clogged arteries away

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Date published: 2008/05/16

The BBC says:

Juices made from apples or purple grapes - and the fruit themselves - protect against developing clogged arteries, a study suggests.

Researchers fed hamsters the fruit and juice or water, plus a fatty diet.

The animals who were fed grape juice had the lowest risk of developing artery problems, Molecular Nutrition and Food Research reports.

The University of Montpellier team said the juice's benefits came from its high levels of phenols - an antioxidant.

Antioxidants in various foods have been regularly cited as being beneficial to heart health.

The French team looked at how juicing affected the phenol content of fruit - because most studies look at raw fruit.

They then looked at how being fed various kinds of fruit affected the hamsters' risk of atherosclerosis - the build-up of fatty plaque deposits in the arteries that can lead to heart attacks or strokes.

The amount of fruit the hamsters consumed was equivalent to three apples or three bunches of grapes daily for a human.

Hamsters given juice drank the equivalent of four glasses daily for a person weighing 70 kilograms (154 pounds).

At least this study (presumably) used randomised sampling, so has some validity. But as a counterweight to that is the fact that it was done on hamsters, not humans, so it should not be taken as the gospel truth when it comes to human health. Further, as with all these health studies, it is only looking at one thing in isolation. So it's quite possible that four glasses of apple (or grape) juice a day would cause some negative effect to counter this positive effect.

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