Organically reverse dementia with blueberries

How to reverse dementia(cognitive impairment) with Organic blueberries

By Jon Barron

While the pharmaceutical industry scrambles unsuccessfully to concoct some drug to counteract the symptoms of dementia, a research team from England has found an easy nutritional intervention that actually seems to reverse cognitive impairment. Scientists at two British Universities–the University of Reading and the Peninsula Medical School–fed elderly rats a regular diet supplemented with about 150 grams (five ounces) of blueberries a day for 12 weeks. After three weeks, the rats showed considerable improvement in performing tasks involving spatial memory. In fact, the blueberry-enhanced old rats performed as well as young rats, improving memory by 83 percent, and the improvements continued for the remaining nine weeks of the study.

Other studies have found significant benefits from blueberry consumption. Researchers in 1999also worked with aging rats who enjoyed blueberry supplementation with their meals. Those rats improved their short-term memory, balance, and coordination almost to youthful levels. Other rats fed strawberries or spinach also saw memory improvements, but no improvement in either balance or coordination.

What magic do blueberries hold? The beneficial effect probably comes from the flavonoid and stilbenoid content in the fruit. Flavonoids are a type of antioxidant found under the skin of brightly colored fruits and vegetables. After eating blueberries, the rats’ brains showed elevated levels of two types of flavonoids–anthocyanidins and flavenols. Blueberries also are high in pterostilbene, astilbenoid chemically related to resveratrol. Pterostilbene has not only been shown to fight off and reverse cognitive decline, but it also has demonstrated anti-cancer properties.

According to an article in Biomedicine, flavonoids have the ability to cross the blood-brain barrier. “It is believed that [flavonoids] exert their effects on learning and memory by enhancing existing neuronal (brain cell) connections, improving cellular communications and stimulating neuronal regeneration,” says the article. In other words, flavonoids interact directly with nerve cells that carry messages to the brain, possibly helping those cells to regenerate and to communicate with each other. Also, flavonoids are known anti-inflammatory agents and so most likely reduce any inflammation in the brain.

This finding, however, does not mean that you have to restrict your diet to blueberries in order to reap the cognitive benefits of flavonoids. Other good sources of flavonoids include dark chocolate, red wine, apples, oranges, grapefruit, most types of berries, cherries, tea, thyme, kale, hot peppers, onions, and fennel. Capers and parsley have off-the-chart high levels. But blueberries are special, because while most food sources contain just one type of flavonoid, blueberries contain an array of different types of flavonoid compounds, particularly the anthocyanidins and flavenols, and they also contain the stilbenoid, pterostilbene, as mentioned above.

A study from Rutgers last year found that eating blueberries cuts colon cancer risk by 57 percent mostly due to the presence of pterostilbene. Pterostilbene inhibits genes that cause inflammation and has been linked to reduction in the size of pre-cancerous lesions. Blueberries are also a good source of ellagic acid, which has anti-cancer properties. Isn’t it amazing how much good stuff such a little berry can contain?

If you’re not convinced that it’s a good thing to eat blueberries, here’s some more evidence. Inanother study earlier this year, pigs fed the equivalent of two cups of blueberries daily reduced their “bad cholesterol” by 20 percent. Other research has discovered that blueberries improve night vision, prevent urinary tract infections, reduce the chance of ischemic stroke, improve heart health, and possibly reduce blood pressure.

One of the directors of this latest work, Dr. Matt Whiteman of the Peninsula Medical School, said, “Our research… supports the idea that a diet-based approach could potentially be used to increase memory capacity and performance in the future.” The research team plans to directly test the impact of flavonoid-rich foods on subjects who have Alzheimer’s or cognitive impairment.

And so, for those of you who have been praying for a miracle-drug to protect you from the threat of getting dementia, Alzheimer’s, or a host of other diseases, take note: that “drug” may be in the supermarket–in the form of something delicious, cheap, and colorful — and without deleterious side effects. There aren’t many drugs you can say the same about.

 

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