Sheila's Nutrition Digest Vol 15 - Superfoods for Athletes Series: Blueberries
By: Sheila Kealey (2007/07/25)
In this series, I'll cover a variety of foods with healing properties, and give you tips on how to incorporate these foods into your daily meals. Articles are adapted from our cookbook Food for Thought: Healing Foods to Savor.
I'll start with a seasonal favourite . . .
BLUEBERRIES
This richly flavored berry will add brilliant color to many dishes. Abundant in vitamin C, fiber, antioxidants, and low in calories, blueberries are also nutritional powerhouses. Research labs have associated many health benefits with the protective compounds found in blueberries. Blueberries may help prevent cancer and other diseases caused by free radical damage; reverse some of the age-related deficits in cognitive and motor function; promote urinary tract health; reduce the build up of "bad" (LDL) cholesterol that contributes to cardiovascular disease and stroke; and improve eyesight and help ease eye fatigue. These findings are preliminary but contribute to the growing amount of research showing us how important it is to eat our fruits and vegetables!
FREE RADICAL FIGHTERS
Researchers have ranked blueberries among the top foods that
can give you the biggest antioxidant boost for your bite. Antioxidants are
important since they fight harmful free radicals, which can damage a wide
variety of functions and internal processes, causing cellular and DNA damage
believed to contribute to aging, cancer, and other diseases.
Anthocyanin (the pigment that makes the blueberries blue) is thought to be responsible for this major health benefit. Because endurance exercise can increase oxygen utilization from 10 to 20 times over the resting state (which can increases the generation of free radicals), athletes should do what they can to minimize this potential damage through proper nutrition.
SELECTING, STORING, AND PREPARING
LOOK FOR firm, plump berries with smooth skin that is
deep-purple blue to blue-black. You may notice a dusty white "bloom" which is
the berry's natural protection from the sun and a sign of freshness. Choose
containers without wet spots or staining, and be sure to discard any soft or crushed
berries.
STORE berries unwashed in your refrigerator in the original container or in a shallow pan lined with paper towels. They are best eaten within 1 or 2 days, but can keep for up to a week.
TO PREPARE berries, place in a strainer and gently spray with cool water, pat dry, and enjoy!
GO WILD
WILD BLUEBERRIES are smaller than the cultivated variety and
have a chewy dense texture and intense flavor. They are considered more
nutritious, since ounce for ounce they have more skin (where most of the blue-red
color pigments reside). This means that wild blueberries contain more
anthocyanins (disease-fighting antioxidants), but you may also end up with blue
lips! Unless you live in Maine or Eastern Canada,
you may not be able to eat fresh wild blueberries, but you can certainly enjoy
the convenience of frozen wild blueberries (most frozen blueberries are the
wild variety).
Keep a Constant Supply . . .
Stock your freezer with frozen blueberries, so you can conveniently pour out the amount you need any time.
- Choose frozen berries that are loose and not clumped together. Use thawed berries within 3 days. Because commercially frozen berries are prewashed, there is no need to rinse them.
- For cooked dishes, you don't need to thaw berries, just lengthen the cooking time a few minutes.
- CANNED BLUEBERRIES are another convenient option. Look for berries that are canned in water or juice.
WAYS TO ENJOY BLUEBERRIES
Delicious Desserts
- Layer yogurt and blueberries in wine glasses and top with crystallized ginger
- Spoon over frozen yogurt or regular yogurt
- Add to fruit salads
- Use in pies, cakes, quick breads, or crisps
- Pile in a cantaloupe half and top with yogurt
Berry Good Breakfasts and Post-Workout Snacks
- Toss blueberries on breakfast cereal
- Drop blueberries onto whole-wheat pancakes just before flipping
- Mix frozen berries into hot oatmeal
- Toss into homemade muffin batter or a lowfat muffin mix
- Blend frozen berries into a shake. Try
this version to get you started . . .
1 cup frozen unsweetened blueberries
1 medium banana
1 cup 1% milk
1 tbsp. sugar (or less to taste)
1 tsp. vanilla
Pour all ingredients into a blender and blend until smooth.
MAKES ONE SERVING
PER SERVING: 350 calories,10 g protein, 73 g carbohydrate, 3 g fat (2 g sat), 10 mg cholesterol,
8 g fiber, 126 mg sodium, 870 mg potassium, and 310 mg calcium.
This article was adapted from Food for Thought:
Healing Foods to Savor
by Sheila Kealey, Vicky A. Newman, and Susan Faerber. Copyright 2006 Regents of the University of California.
Read more of Sheila's Nutrition Digest Series here.