Blueberries
Ellen Kamhi, Ph.D. R.N. THE NATURAL NURSE
Blueberries are one of the few fruits native to North American. Native Americans used
the berries for food and dye. They believed the five pointed star that forms at the end
of fruit signified that the tribal ancestors sent “star berries” as a spiritual gift. When
settlers from England arrived in the northeast, local tribes taught them how to use the
nutritious and delicious blueberry as part of their food staples. During the Civil War,
dried blueberries and blueberry beverages were used as an important food source for
soldiers.
Antioxidants are substances that help protect our cells from damage due to ‘free
radicals’- molecules that disrupt cell membranes, which can eventually lead to the effects
of aging and disease. Among natural sources of antioxidants, blueberries are excellent. A
study performed by the Jean Mayer USDA Human Nutrition Research Center on Aging
at Tufts University in Boston Massachusetts compared 40 common fruits and vegetables
and found blueberries as the highest in antioxidant activity. One ½ cup serving of
blueberries delivers as much antioxidant power as 5 servings of many other fruits and
vegetables!
Blueberries are very high in proanthocyanin, a well-studied specific antioxidant that
prevents an excess of free radicals. Blueberries are also high in healthy substances
known as flavonoids , including anthocyanin. Anthocyanins, from two Greek words
meaning “plant” and “blue”, are responsible for the intense blue and red pigments of
blueberries. Over 60 scientific studies link the blue in wild blueberries to good health.
Anthyocyanins have a different chemical structure compared with other common
antioxidants such as Vitamin C. This unique structure makes them three to four times
more potent than other fruits and vegetables. Although other red or purple fruits such as
plums and strawberries also contain anthyocyanin, Blueberries appear to have the highest
concentrations of this antioxidant among fruits commercially available in North America.
Blueberries are promising nutritional weapons against disease. In today’s world,
blueberries are being heralded as a delicious weapon in the “anti-aging”, or as I prefer to
call it, the ‘graceful aging’ arsenal. In a study funded by the National Institute on Aging
(NIA) and the U. S. Department of Agriculture, which appeared in the September 15,
1999, issue of the Journal of Neuroscience, rats were fed a blueberry extract diet, rich
in naturally derived antioxidants. The rats showed fewer age-related motor changes
and out-performed their study counterparts on memory tests. Although strawberry
and spinach extracts also improved short term memory, only blueberries supported
progress in navigation capabilities and overall co-ordination. This is important because
aging often causes challenges with co-ordination and balance. I addition, rats in all the
supplement groups had sufficient Vitamin E in the cell membranes of their brains, which
increases cellular flexibility and repair. Holly McCord, RD, author of “The Miracle
Berry” and Prevention's Nutrition Editor says, “If you add one food to your diet this year,
make it blueberries.” According to McCord, blueberries are the “... single most ferocious
food in the supermarket at halting the forces that age you.”
Professor David Morgan at the Alzheimer’s Research Lab at the University of South
Florida is also excited about the possibilities of blueberries. Morgan has worked with
Tuft’s University on a transgenic model of Alzheimer’s disease and says he hopes the
research he’s involved in proves that blueberries are the nutritional answer to disease
and aging that they seem to be. With a scientist’s skepticism, he adds, “I doubt that our
studies will show blueberries to be the miracle cure some people claim – but I hope they
do. Blueberries are an affordable, healthy and delicious remedy.”
To get an even better effect, choose “organic” blueberries whenever possible, to avoid
the negative effects associated with pesticides. A good plan of action is to ‘stock up’ on
organic blueberries when they are in season, and simple put containers in the freezer to
be used at a later date. They can be eaten ‘as is’, or added to healthy breakfast cereals,
oatmeal or yogurt for a nutritious start to the day. Another great way to save blueberries
for a ‘rainy day’ is to purchase a dehydrator and dry the fresh berries for later use- this is
a good way to save many kinds of healthy fruits and vegetables for times when they are
not in season.
Try this Blueberry Smoothie:
8-12 ounces of Unsweetened Soy Milk or Organic Skim Milk
One Scoop of Organic Spirulina or Barley Grass Powder
1 Tablespoon or Organic Unrefined Coconut Oil
½ cup Organic Fresh or Frozen Blueberries
2 –3 ice cubes
Place all together in a blender, and Blend for One Minute
Enjoy a Healthy, High Protein, Nutritious , Low Calorie Meal!