Not only do sweet potatoes taste like a scrumptious dessert, they also provide your body with some awesome health benefits. Cutting-edge research on sweet potatoes indicates they have many unique nutritional benefits that support good health and well-being. Among these benefits are antioxidants, anti-inflammatory nutrients, and blood sugar-regulating nutrients.
For instance, in several studies from Africa, sweet potatoes were found to contain between 100-1,600 micrograms (RAE) of vitamin A in every 3.5 ounces—enough, on average, to meet 35% of all vitamin A needs, and in many cases enough to meet over 90% of vitamin A needs (from this single food alone).
Interesting Facts about Sweet Potatoes
Did you know that some sweet potatoes can also be a gorgeous purple color?
Often it’s difficult to tell from the skin of sweet potato just how rich in purple tones its inside will be. That’s because scientists have now identified the exact genes in sweet potatoes (IbMYB1 and IbMYB2) that get activated to produce the purple anthocyanin pigments responsible for the rich purple tones of the flesh. The purple-fleshed sweet potato anthocyanins—primarily peonidins and cyanidins—have important antioxidant properties and anti-inflammatory properties. Particularly when passing through our digestive tract, they may be able to lower the potential health risk posed by heavy metals and oxygen radicals.
Include some fat when consuming sweet potatoes if you want to enjoy the full beta-carotene benefits.
Recent research has shown that a minimum of 3-5 grams of fat per meal significantly increases our uptake of beta-carotene from sweet potatoes. Of course, this minimal amount of fat is very easy to include. For instance including extra virgin olive oil, organic grass-fed butter or coconut oil are great choices.
Steaming or boiling sweet potatoes may allow your body to get greater nutritional benefits from sweet potatoes.
Recent studies show excellent preservation of sweet potato anthocyanins with steaming, and several studies comparing boiling to roasting have shown better blood sugar effects (including the achievement of a lower glycemic index, or GI value) with boiling. Only two minutes of steaming sweet potatoes have been show to deactivate peroxidase enzymes that might otherwise be able to break down anthocyanins found in the sweet potato. In fact, with these peroxidase enzymes deactivated, natural anthocyanin extracts from sweet potato used for food coloring may be even more stable than synthetic food colorings. This benefit isn’t limited to the food’s appearance since the anthocyanins have great health benefits as antioxidants and anti-inflammatory nutrients.
Researchers have long been aware of sporamins—storage proteins in sweet potato—but only recently has research shown some of their special antioxidant properties. The potential health benefits of the sweet potato sporamins in helping prevent oxidative damage to our cells is not surprising since sweet potatoes produce sporamins whenever subjected to physical damage to help promote healing.
Exciting Health Benefits of Sweet Potatoes
- 7 grams fiber per serving
- rich in Vitamin B6
- rich in potassium
- rich in beta-carotene
- good source of manganese
- anti-oxidant rich
- anti-inflammatory properties
- supports healthy blood sugar
- antibacterial properties
- antifungal properties
- supports clear skin
- helps maintain collagen
- soothing for the stomach
- helps prevent constipation
- helps with emphysema
- promotes healthy digestive tract
- may decrease the dangers presented by heavy metals & oxygen radicals
- rich in Vitamin C
Difference Between Sweet Potatoes and Yams
It is very easy, especially in the United States to confuse sweet potatoes and yams. However, they are completely different foods that belong to different plant families. The main difference to note is that sweet potatoes are much more available in the United States than are yams.
There are a couple of reasons for this confusion.
1) It is probable for shoppers to find sweet potatoes and yams that look much alike in terms of size, skin color, and flesh color.
2) Our government agencies have allowed the use of the terms “sweet potato” and “yams” somewhat interchangeably on labeling. In many stores you may find bins labeled “Red Garnet Yams” and “Jewel Yams” however, the potatoes these bins are actually sweet potatoes. Below are some general rules to follow.
- In most U.S. groceries, you should assume that you are always purchasing a sweet potato, even if the sign says “yams”. More than one million sweet potatoes are commercially grown in the United States every year, while commercial production of yams in the United States is rare.
- Don’t allow the flesh color to make the determination as to whether you are getting a sweet potato or a yam. Both root vegetables come in a variety of colors. You should always assume that you are getting a sweet potato, regardless of flesh color.
- If you are wanting to purchase a true yam (from the plant genus Dioscorea), visiting a more internationally focused store may be your best bet.
The name “yam” adopted from “nyami“—the Fulani (West African) word that means “to eat” and that has traditionally been used to refer to yams. Yams are native to Africa and Asia, and unlike potatoes, they have the potential to grow to a larger size.
From a science perspective, true yam is a root vegetable belonging to the Dioscoreaceae family, which are monocotyledons (or “monocots” for short, with the prefix “mono” referring to the fact that they have only one embryonic seed leaf). Sweet potatoes belong to the Convolvulaceae or morning-glory plant family, are dicotyledons (or “dicots” for short, with the prefix “di” referring to the fact that they have two embryonic seed leaves), and are known by the scientific name of Ipomoea batatas. These two root vegetables come from very different parts of the plant world, even though their names are used interchangeably in the United States marketplace.
2 small or 1 large sweet potato
1 1/2 tablespoons cold-pressed, extra virgin olive oil or avocado oil
1/4 teaspoon cayenne pepper
Preheat oven to 425 degrees. Peel sweet potatoes & thinly slice crosswise into 3/8 inch thick slices. If you have a mandoline slicer, use it for consistent, even slices. Place the sweet potato slices in a bowl. Add olive oil or avocado oil, cayenne pepper & salt to taste. Mix well. Spread the slices out on a baking pan in a single layer. Bake about 12 minutes on each side. Check often to make sure the smaller or thinner pieces don’t burn.
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- The World’s Healthiest Foods. www.whfoods.org
†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. Oasis Advanced Wellness/OAWHealth does not dispense medical advice, prescribe, or diagnose illness. The views and nutritional advice expressed by Oasis Advanced Wellness/OAWHealth are not intended to be a substitute for conventional medical service. If you have a severe medical condition or health concern, see your physician of choice.