When researchers analyzed fruits and vegetables for their
antioxidant capability, blueberries came out on top, rating highest in
their capacity to destroy free radicals.1
Just this year, scientists have discovered mechanisms to explain how
blueberries can improve memory and restore healthy neuronal function to
aged brains. The astounding conclusion of researchers was that the
favorable effects of blueberries on brain function are analogous to
those seen with long-term calorie restriction.2,3
Blueberry extracts help maintain healthy blood flow
via several mechanisms including healthy LDL oxidation, normal platelet
aggregation, and maintenance of endothelial function.*
When blood flow is interrupted to the brain
(ischemia), significant and permanent damage often results. In rats fed
blueberries, the size of the area of the brains damaged by ischemia was
50 percent less than the control group.4
Blueberry's most active constituents
The two most active constituents found in this health-promoting fruit
are anthocyanins and pterostilbene. Blueberry anthocyanins are
considered nature's most potent antioxidants and have demonstrated
properties that extend well beyond suppressing free radicals.
Pterostilbene is another blueberry constituent that helps maintain
healthy lipid and glucose levels that are already within healthy ranges.5
Even more exciting is that through its unique biological effects,
pterostilbene may help maintain healthy DNA structure.6
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References
1. J Agric Food Chem. 2004 Jun 16;52(12):4026-37.
2. J Neurosci. 1999 Sep 15;19(18):8114-21.
3. Neurobiol Aging 2005 Apr 30;(Epub ahead of print).
4. Exp Neurol. 2005 May;193(1):75-84.
5. J Agric food Chem. 2005 May 4;53(9):3403-7.
6. Mutat Res. 2003 Feb 5;535(1):103-15. |