The potent phenolic compound
resveratrol and its close cousin, pterostilbene have long been touted for their
anti-cancer, anti-inflammatory and blood sugar-lowering health benefits. Information
published in the prestigious journal publications, Neurobiology of Aging and The Journal of Nutritional Biochemistry both cite resveratrol
and pterostilbene as powerful brain-boosting agents, enhancing cognitive and
mental function while lowering the risk from many forms of dementia.
Pterostilbene, chemically similar
to resveratrol,
is a bioactive protective compound found commonly in many fresh fruits and
vegetables. Numerous research studies show the two compounds acts to reduce
inflammation throughout the body, a process behind seven of the ten most common
disease processes that lead to death. Including this potent duo as part of your
healthy diet, or from supplementation may help aid memory retention.
Resveratrol and Pterostilbene Stimulate Insulin Growth Factor to Impede
Cognitive Decline
Resveratrol is a bioactive
compound extracted most commonly from the skin of red grapes and found at
differing concentrations in red wine. Researchers in Japan working with mice
examined the effect of consuming red wine with a resveratrol concentration of
20 mg per liter, compared with a lower concentration of 3.1 mg per liter. A
typical glass of red wine averages 4.7 mg per liter of resveratrol
concentration.
The scientists found that the
higher resveratrol concentration resulted in improved cognitive function using
a variety of spatial and memory intensive tests. The benefits were linked to an
increase in the production of a peptide called insulin-like growth-factor-I
(IGF-I) that promotes the growth of blood vessels and neurons in the
hippocampus region of the brain. Researchers commented “It is thus possible that drinking red wine with regular concentrations
of resveratrol for long periods lowers the risk of age-associated cognitive
decline.” Experts recommend an intake of 25 to 50 mg of resveratrol each
day for optimal health effects.
Pterostilbene Lowers the Effect of Cellular Damage from Stress and
Inflammation
In a separate research study
conducted at Case Western Reserve University and Tufts University, two groups
of mice were fed either identical doses of resveratrol or pterostilbene, about
the equivalent of drinking two glasses of wine. While both compounds were found
to boost levels of cognition, those receiving the pterostilbene demonstrated
modulated markers of cellular stress and inflammation. This effect was not seen
in the resveratrol supplemented mice.
The researchers concluded
that because of the slight structural difference between the two compounds, “This change may lead to a better
bioavailability of pterostilbene and consequently a more neuroprotective effect
in the brain.” Pterostilbene is available naturally through a diet
including blueberries, grapes, cranberries and olive oil or can be supplemented
(50 mg per day) to meet nutritional goals. Both compounds provide a healthy
synergistic effect that can help preserve memories and mental function as we
age.
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