Five Reasons To Eat More Sweet Potatoes

Five Reasons To Eat More Sweet Potatoes By GreenMedInfo Research Group

From cognitive protection to immune support here are five compelling reasons to incorporate sweet potatoes into your everyday diet.

Sweet potatoes are more than just a popular staple food serving as a sweet appetizer, side dish or filling snack on their own. This starchy root vegetable has plenty to offer when it comes to achieving optimal health. Sweet potato is a common food source for many indigenous populations in Africa, Central and South Americas, the Caribbean and Hawaii.[i]

It’s an excellent source of natural compounds, including beta-carotene and anthocyanins. The high concentration of these compounds in the root crop, paired with its stable colors, make sweet potato a healthful alternative to synthetic coloring agents in food. Let’s take a closer look at five ways that sweet potatoes benefit overall wellness.


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1. Rich Nutrition Profile

One cup of cubed sweet potatoes provides the following:[ii]

Water — 103 grams (g)

Energy — 114 kilocalories (kcal)

Protein — 2.09 g

Carbohydrate — 26.9 g

Fiber — 3.99 g

Sugar — 5.56 g

Calcium — 39.9 milligrams (mg)

Iron — 0.811 mg

Potassium — 448 mg

Phosphorus — 62.5 mg

Sodium — 73.2 mg

Vitamin C — 3.19 mg

The orange and purple varieties are rich in antioxidants such as beta-carotene, chlorogenic acid and vitamin C.[iii],[iv] There’s an abundance of colors of sweet potatoes worldwide, including white, yellow, orange and purple. In the American market, however, sweet potato typically has a deep-orange flesh color, a skin color of light to medium rose, copper or red, a sweet flavor and moist texture.[v]

2. Enhanced Memory and Cognitive Health

A 2013 study found that a purple sweet potato extract rich in caffeoylquinic acids led to a neuroprotective effect on the brain of animal models, potentially helping improve spatial learning and memory.[vi]

Purple sweet potato color comes from a class of naturally occurring anthocyaninsthat have strong antioxidant and neuroprotective activity.[vii] In animal subjects, it showed great promise in improving cognitive function. In further animal studies, purple sweet potatoes were shown to protect the brain by reducing inflammation.[viii]

3. Immune Support

Sweet potatoes with orange flesh are among the best natural sources of beta-carotene, which is converted to vitamin A in the body.[ix]

Vitamin A is critical to a healthy immune system. “It is not surprising that vitamin Adeficiency is associated with impaired intestinal immune responses and increased mortality associated with gastrointestinal and respiratory infections,” researchers wrote in Nature Reviews Immunology.[x]

Purple sweet potatoes are also of particular interest in immune support, with polysaccharides including water-soluble polysaccharide, dilute alkali-soluble polysaccharide and concentrated alkali-soluble polysaccharide (CASP) evaluated for immune-enhancing effects.[xi]

All three polysaccharides evaluated were found to stimulate immune responses of macrophages as well as positively regulate the subjects’ adaptive immunity by enhancing immunoglobulin production. Separate research also indicates that purple sweet potato extract may address immune dysfunction by mobilizing antioxidant defenses.[xii]

4. Anticancer Potential

Anthocyanins, a group of antioxidants found in sweet potatoes, have been widely evaluated for their anticancer properties, particularly against colorectal, colon, bladder, breast and gastric cancers.[xiii],[xiv],[xv],[xvi]

Against colorectal cancer, sweet potatoes may induce cell-cycle arrest, antiproliferative and apoptotic, or cell death, mechanisms. In bladder cancer, sweet potato anthocyanins had an antitumor effect. Taiwanese purple-fleshed sweet potatoes, too, were found to have anticancer activities through their ability to inhibit the growth of cancer cell lines such as breast cancer, gastric cancer and colon adenocarcinoma.

Even sweet potato peel, usually discarded as waste, contains constituents that may help prevent various types of cancer from developing.[xvii]

5. Diabetes Control and Prevention

Anthocyanins can also serve as a functional food for diabetes. Antioxidants in general have been found to reduce oxidative stress due to hyperglycemia, and anthocyanins from purple sweet potatoes positively affected liver and renal activity as well as blood pressure in diabetic animal models.[xviii]

This class of antioxidants, found in purple sweet potato, also had beneficial effects on diabetes-induced endothelial dysfunction in animal subjects.[xix] You can learn more about sweet potatoes and their health benefits through studies on the GreenMedInfo.com database.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of GreenMedInfo or its staff.

Source: GreenMedInfo Copywrite 2022

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