A registered dietitian nutritionist explains.
Water chestnuts are the starchy, edible bulbs (or corms) of theEleocharis dulcisplant.
These plants are native to Asia, tropical Africa, and Australia.
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The water chestnut is a floating plant that is often found in marshes.
Asian cultures have long used its corm for its medicinal benefits and unique, crispy flavor in culinary endeavors.
Water chestnuts are harvested seasonally and peeled, after which the corm is eaten raw or lightly cooked.
They have been studied for their health-promoting components, such asflavonoids,polyphenols, andsterols.
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What Are Water Chestnuts?
Water chestnuts are not nuts.
Instead, they are the starchy fruiting bulb (or corm) of the aquatic plantEleocharis dulcis.
The water caltropis distinguishable from the water chestnut by itstrapezoidalshape and sharp thorns.
When choosing water chestnuts for purchase, the exteriors should be uniform in shape and color.
The chestnuts should also be firm to the touch.
After peeling the chestnut and revealing the inner corm, it is edible raw.
Generally, water chestnuts have a mild flavor, which lends itself well to many recipe combinations.
The peel of the water chestnut does havenitritescavenging effects.
According to a 2013 meta-analysis, increased potassium intake correlated to decreased blood pressure and overall stroke risk.
This may be promising preliminary evidence of water chestnuts' anticancer components.
However, more human research is necessary to confirm those results.
Liver Health
Lab studies also examined the water chestnut’sliver-protecting effects.More research is necessary to confirm the results.
Are Water Chestnuts Good for Me?
As discussed above, water chestnuts contain many health benefits and are an enjoyable addition to most diets.
You should avoid water chestnuts if you’re allergic to them or their components.
Most individuals can safely consume water chestnuts.
The peel of the water chestnut is generally inedible.
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