April 27, 2010
Rats On Grapes Have Better Blood Chemistry

Grapes help rats in the rat race of life. Powdered grapes made up 3% of their diets.

Researchers studied the effect of regular table grapes (a blend of green, red and black grapes) that were mixed into a powdered form and integrated into the diets of laboratory rats as part of a high-fat, American style diet. All of the rats used were from a research breed that is prone to being overweight.

They performed many comparisons between the rats consuming a grape-enriched diet and the control rats receiving no grape powder. Researchers added calories and sugars to the control group to balance the extra calories and sugars gained from getting the grape powder.

Lower blood pressure and improved glucose tolerance were among the indicators pointing at benefits from eating grapes.

After three months, the rats that received the grape-enriched diet had lower blood pressure, better heart function, and reduced indicators of inflammation in the heart and the blood than rats who received no grape powder. Rats also had lower triglycerides and improved glucose tolerance.

The effects were seen even though the grape-fed animals had no change in body weight.

So there you have it. Eat some grapes or raisins. My guess is that assorted berries rich in phytonutrients will deliver many of the same benefits. Try to get the various types of phytonutrients in your diet.

Share |      Randall Parker, 2010 April 27 12:37 AM  Aging Diet Metabolism

bane said at April 27, 2010 9:32 AM:

Raisins are argued to be a very bad food to eat on the following grounds: (1) removing the water means that you tend to consume more raisins than you would grapes as you eat primarily "by volume", given the sugar content that's bad (2) the interior tends to stick to the teeth after eating much, much more than grapes/berries which again is a problem due to the high sugar. The only real reasons for raisins is for the convenience in moving them around.

Aron said at April 27, 2010 10:47 AM:

Grapes displace rat chow and help some rat health indicators that sometimes indicate health. This might be good information for those of us that eat rat chow.

Nick G said at April 27, 2010 11:45 AM:


Most of us eat pretty poorly - rat chow would be an improvement.

JP said at April 27, 2010 12:44 PM:

Wasn't there a study a while back that had said much the same thing about powdered cherries?

BlogDog said at April 27, 2010 12:47 PM:

This anticipates my upcoming nutrition book: The Grapes of Rats.

LAG said at April 27, 2010 2:48 PM:

Just returned from the market with a big bunch of grapes. Very nice, though I normally take grape in its liquid form.

Randall Parker said at April 27, 2010 10:38 PM:


I'm about to do another post on a new study about the benefits of tart cherries.

PhilG said at April 29, 2010 11:11 PM:


I bow to you, sir. Perfection.

Post a comment
Name (not anon or anonymous):
Email Address:
Remember info?

Go Read More Posts On FuturePundit
Site Traffic Info
The contents of this site are copyright